All (in this database) Fish list (Scientific names): Part O
A
AF
AM
AO
AS
AV
B
BD
BJ
BR
BT
C
CE
CI
CR
CW
D
DH
DR
E
EN
EV
F
FL
FS
G
GJ
GU
H
HG
HW
I
IO
J
K
KR
L
LB
LH
LT
M
MB
MF
MK
MV
N
NG
NJ
O
OH
OS
P
PE
PF
PN
PS
PY
Q
R
RH
RP
S
SE
SI
SO
SQ
SU
T
TH
TS
U
V
VI
W
X
Y
Z
- oahuensis (Ostracion)
- ?oahuensis Borodin, 1930 ( Holacanthusbicolor)
- oahuensis Jenkins, 1903 (Tropidichthys), see Canthigaster amboinensis
- oatesii Boulenger, 1893 (Mastacembelus)
- oatesii (Puntius), see Puntius sarana
- oatesii Boulenger, 1893 (Barbus), see Puntius sarana
- oaxacae Burgess, 1989 (Rhamdia quelen), see Rhamdia quelen
- oaxacae Meek, 1902 (Fundulus), see Profundulus punctatus
- oaxacae Meek, 1902 (Rhamdia), see Rhamdia quelen
- ?oaxacanensis Bocourt, 1868 (Tetragonopterus)
- obbesi Poss & Eschmeyer, 1978 (Paraploactis)
- obbesi Weber, 1913 (Porochilus)
- obbesi Weber, 1913 (Coccotropus), see Paraploactis obbesi
- obbesi Whitley, 1933 (Membracidichthys), see Paraploactis obbesi
- obeini Kottelat, 1998 (Schistura)
- obensis Anikin, 1902 (Lota vulgaris var. ), see Lota lota
- obensis Johansen, 1945 (Acipenser baeri infra. ), see Acipenser baerii
- obermulleri Myers, 1926 (Pyrrhulina)
- ?obesa Girard, 1856 (Algansea)
- obesa Eigenmann & Eigenmann, 1888 (Rhamdia), see Rhamdia muelleri
- obesa Zugmayer, 1911 (Pachycara), see Pachycara obesum
- obesum Zugmayer, 1911 (Pachycara)
- obesus Gomon et al., 1994 (Gymnothorax)
- obesus (Nemacheilus)
- obesus (Leuciscus)
- obesus Gill, 1864 (Enneacanthus)
- obesus Regan, 1920 (Lipochromis)
- obesus Postel, 1973 (Thunnus)
- obesus Son, Kim & Choo, 1987 (Liobagrus)
- obesus Boulenger, 1898 (Synodontis)
- obesus Mìller & Henle, 1837 (Triaenodon)
- ?obesus Basilewsky, 1855 (Cyprinus)
- obesus Boulenger, 1906 (Pelmatochromis), see Lipochromis obesus
- obesus Castelnau, 1861 (Hemirhamphus), see Hemiramphus far
- obesus Girard, 1854 (Pomotis), see Enneacanthus obesus
- obesus Greenwood, 1959 (Haplochromis), see Lipochromis obesus
- obesus Kottelat, 1990 (Sundoreonectes), see Nemacheilus obesus
- obesus Lowe, 1839 (Thynnus), see Thunnus obesus
- obesus Regan, 1922 (Haplochromis), see Lipochromis obesus
- obesus Rìppell, 1837 (Carcharias), see Triaenodon obesus
- obesus Smith, 1838 (Echinorhinus), see Echinorhinus brucus
- obesus Vaillant, 1902 (Noemacheilus), see Nemacheilus obesus
- obesus Whitley, 1931 (Pachycarichthys), see Pachycara obesum
- obesus Whitley, 1932 (Uropterygius), see Gymnothorax obesus
- obesus Worthington, 1929 (Barbus), see Barbus altianalis
- obeyense Kirsch, 1892 (Etheostoma)
- obfuscata Wongratana, 1983 (Ilisha)
- obishime Randall & Earle, 1993 (Scarus)
- Oblada Cuvier, 1829 (Sparidae)
- ?oblada Lacep¨de, 1802 (Sparus)
- obliqua Rosen, 1979 (Heterandria)
- obliqua Eigenmann, 1908 (Thayeria)
- obliquata Iwamoto, 1990 (Nezumia)
- obliquatus Bennett, 1832 (Diabasis), see Haemulon sciurus
- obliquatus Gilbert, 1905 (Macrourus), see Nezumia obliquata
- obliquatus Valenciennes, 1879 (Otolithus), see Cynoscion regalis
- Obliquichthys Hardy, 1987 (Tripterygiidae)
- obliquidens Trewavas, 1935 (Cyathochromis)
- obliquidens Hilgendorf, 1888 (Haplochromis)
- obliquidens Hilgendorf, 1888 (Chromis), see Haplochromis obliquidens
- ?obliquifasciatus Wu & Ni, 1985 (Mugilogobius)
- obliquioculatum Amaoka, Mihara & Rivaton, 1993 (Engyprosopon)
- obliquioculatus Fowler, 1934 (Bothus), see Engyprosopon obliquioculatum
- Obliquogobius Koumans, 1941 (Gobiidae)
- obliquus Costa, 1998 (Aphyolebias)
- obliquus (Centriscops)
- obliquus Springer & Gomon, 1975 ( Omobranchusrotundiceps)
- obliquus Lubbock & Edwards, 1980 (Chaetodon)
- obliquus Waite, 1905 (Neatypus)
- obliquus Costa, Sarmiento & Barrera, 1996 (Pterolebias), see Aphyolebias obliquus
- obliquus Eigenmann, 1908 (Thayeria), see Thayeria obliqua
- obliquus Garman, 1903 (Petroscirtes), see Omobranchus rotundiceps obliquus
- obliquus McCulloch & Ogilby, 1919 (Gobius lateralis var. ), see Favonigobius lateralis
- obliquus Mitchill, 1814 (Mugil), see Leiostomus xanthurus
- obliquus Nichols & Griscom, 1917 (Lamprologus), see Lamprologus mocquardi
- obliquus Whitley, 1935 (Pauloscirtes), see Omobranchus rotundiceps obliquus
- oblita Cohen, 1973 (Nansenia)
- oblitum Facciol , 1887 (Microstoma argenteum), see Nansenia oblita
- oblonga (Pangio)
- oblonga Bradbury, 1967 (Dibranchus)
- ?oblonga Walbaum (ex Artedi), 1792 (Raja)
- oblonga Castelnau, 1855 (Chromys), see Herichthys facetum
- oblonga Cuvier, 1828 (Ambassis), see Chanda nama
- oblonga Gill, 1861 (Chaenopsetta), see Paralichthys oblongus
- oblonga Smith & Radcliffe, 1912 (Coelophrys), see Dibranchus oblonga
- oblonga Swainson, 1839 (Salmophasia), see Salmostoma bacaila
- oblonga Valenciennes (ex Kuhl & van Hasselt), 1846 (Cobitis), see Pangio oblonga
- oblonga Valenciennes, 1835 (Equula), see Leiognathus berbis
- oblongior Cuvier, 1831 (Pimelepterus), see Kyphosus sectator
- oblongirostris Blanchard, 1866 (Anguilla), see Anguilla anguilla
- oblongus Kamohara, 1953 (Chlorophthalmus)
- oblongus Jordan, 1876 (Erimyzon)
- oblongus Kuhl & van Hasselt, 1823 (Crossocheilus)
- oblongus Bulgakov, 1923 (Alburnoides)
- oblongus Smith-Vaniz, 1986 (Carangoides)
- oblongus Cuvier, 1830 (Gerres)
- oblongus Robins & Ray, 1986 (Paralichthys)
- oblongus Gìnther, 1877 (Sebastes)
- oblongus Dor, 1984 (Stephanolepis)
- oblongus (Ostracion)
- oblongus Abe, 1949 (Takifugu)
- oblongus Parin, 1989 (Zenopsis)
- ?oblongus Bloch & Schneider (ex Parra), 1801 (Sparus)
- oblongus Antipa, 1909 (Cyprinus carpio var. ), see Cyprinus carpio
- oblongus Berg, 1932 (Squalalburnus), see Alburnoides oblongus
- oblongus Bloch & Schneider, 1801 (Orthragoriscus), see Ranzania laevis
- oblongus Bloch, 1786 (Tetrodon), see Takifugu oblongus
- oblongus Cuvier, 1832 (Trachinotus), see Trachinotus baillonii
- oblongus Cuvier, 1833 (Caranx), see Carangoides oblongus
- oblongus Gushiken, 1984 (Carangichthys), see Trachinotus baillonii
- oblongus Gìnther, 1867 (Heros), see Theraps microphthalmus
- oblongus Heckel & Kner, 1858 (Carassius), see Carassius carassius
- oblongus Matsubara, 1943 (Takenokius), see Sebastes oblongus
- oblongus Mitchill, 1814 (Cyprinus), see Erimyzon oblongus
- oblongus Mitchill, 1815 (Pleuronectes), see Paralichthys oblongus
- oblongus Rafinesque, 1810 (Orthragus), see Ranzania laevis
- oblongus Roberts, 1989 (Acantophthalmus), see Pangio oblonga
- oblongus Schneider, 1801 (Gobius), see Gobioides broussonnetii
- oblongus Shaw, 1804 (Cephalus), see Ranzania laevis
- oblongus Temminck & Schlegel, 1850 (Monacanthus), see Stephanolepis oblongus
- oblongus Valenciennes, 1842 (Labeo), see Crossocheilus oblongus
- ?oblungus Canestrini, 1869 (Scorpis)
- Obolarius Tilesius (ex Steller), 1811 (Gasterosteidae), see Gasterosteus
- obolarius Cuvier, 1829 (Gasterosteus), see Gasterosteus aculeatus
- obreptus Allen & Emery, 1985 (Stegastes)
- obreptus Whitley, 1948 (Pomacentrus), see Stegastes obreptus
- obrukensis Aksiray, 1948 (Aphanius chantrei), see Aphanius anatoliae
- obscura Gìnther, 1872 (Anguilla)
- obscura Kottelat, 1991 (Telmatherina)
- obscura Wang, Xu, Fang, Song & Wang, 1987 (Triplophysa)
- obscura Kobylyansky & Usachev, 1992 (Nansenia)
- obscura Haedrich, 1967 (Psenopsis)
- obscura Teugels & Daget, 1984 (Parachanna)
- obscura Paxton et al., 1989 (Nannoperca)
- obscura Bleeker, 1874 (Odontobutis)
- obscura Deng, 1994 (Coreoperca)
- obscura Li, 1984 (Glyptothorax)
- obscura Brauer, 1902 (Cyclothone)
- obscura Garman, 1899 (Sternoptyx)
- obscura ( Chiloscylliumindicum)
- ?obscura Gronow, 1854 (Muraena)
- ?obscura Vaillant, 1902 (Parhomaloptera)
- ?obscura Osbeck, 1770 (Perca)
- obscura Bloch & Schneider, 1801 (Trigla), see Chelidonichthys obscurus
- obscura Castelnau, 1855 (Chromys), see Geophagus brasiliensis
- obscura Gìnther, 1880 (Julis), see Thalassoma ballieui
- obscura Jenkins, 1903 (Echidna), see Echidna polyzona
- obscura Klausewitz & Eibl-Eibesfeldt, 1959 (Xarifania), see Heteroconger obscurus
- obscura Nichols, 1930 (Siniperca), see Coreoperca obscura
- obscura Seale, 1901 (Leiognathus), see Leiognathus equulus
- obscura Swainson, 1839 (Acoura), see Nemacheilus savona
- obscura Temminck & Schlegel, 1845 (Eleotris), see Odontobutis obscura
- obscura Walbaum, 1792 (Trigla), see Chelidonichthys obscurus
- obscuratus Poey, 1870 (Gymnothorax), see Lycodontis vicinus
- obscuratus Poey, 1876 (Pomacentrus), see Stegastes dorsopunicans
- obscurella Deng, Xiong & Zhan, 1981 (Carcharhinus), see Carcharhinus obscurus
- ?obscuripinnis Peters, 1869 (Gobius)
- ?obscurirostris Rendahl, 1921 (Gymnothorax)
- obscurum ( Aphyosemioncameronense)
- obscurum Costa, 1996 (Fluviphylax)
- obscurum Ahl, 1924 (Panchax), see Aphyosemion cameronense obscurum
- obscurum Cuvier, 1829 (Pelor), see Inimicus didactylus
- obscurum Gill, 1859 (Tridentiger), see Tridentiger obscurus
- obscurum Gray, 1851 (Chiloscyllium), see Chiloscyllium indicum
- obscurum Gìnther, 1862 (Uaru), see Uaru amphiacanthoides
- obscurum Gìnther, 1872 (Diagramma), see Plectorhinchus obscurus
- obscurum Radda, 1977 (Mesoaphyosemion cameronense), see Aphyosemion cameronense obscurum
- obscurum Radda, 1977 (Mesoaphyosemion), see Aphyosemion cameronense obscurum
- obscurum Temminck & Schlegel, 1845 (Sicydium), see Tridentiger obscurus
- obscurus Smith, 1989 (Heteroconger)
- obscurus Hildebrand, 1938 (Brycon)
- obscurus Lin, 1981 (Semilabeo)
- obscurus Paulin, 1989 (Gadella)
- obscurus (Dibranchus)
- obscurus (Blennius)
- obscurus Williams, 1988 (Cirripectes)
- obscurus Bath, 1992 (Salarias)
- obscurus Colombe & Allgayer, 1985 (Neolamprologus)
- obscurus Jordan & Snyder, 1901 (Tridentiger)
- obscurus Lieske & Myers, 1994 (Plectorhinchus)
- obscurus Clark, 1980 (Enneapterygius)
- obscurus Toyoshima, 1985 (Lycodes)
- obscurus Pitruk & Fedorov, 1993 (Elassodiscus)
- obscurus Richards, 1968 (Chelidonichthys)
- obscurus Vaillant, 1884 (Eustomias)
- obscurus Masuda, Amaoka, Araga, Uyeno & Yoshino, 1984 (Takifugu)
- obscurus Compagno, 1973 (Carcharhinus)
- obscurus Krefft & Tortonese, 1973 (Scymnodon)
- ?obscurus Weyenbergh, 1877 (Xiphophorus)
- ?obscurus Fricke, 1989 (Callionymus)
- ?obscurus Fourmanoir, 1957 (Diagramma)
- ?obscurus Ehrenberg, 1829 (Scarus)
- ?obscurus Collett, 1879 ( Liparismontagui)
- ?obscurus Castelnau, 1875 (Monacanthus)
- ?obscurus Fricke, 1989 (Spinicapitichthys), see Callionymus obscurus
- obscurus Abe, 1949 (Sphoeroides ocellatus f. ), see Takifugu obscurus
- obscurus Ahl, 1924 (Panchax), see Aphyosemion cameronense obscurum
- obscurus Alleyne & Macleay, 1877 (Pomacentrus), see Pomacentrus trilineatus
- obscurus Borodin, 1927 (Exallias), see Cirripectes obscurus
- obscurus Borodin, 1930 (Balistapus aculeatus var. ), see Balistapus aculeatus
- obscurus Boulenger, 1888 (Chaetodon), see Chaetodon nigropunctatus
- obscurus Castelnau, 1872 (Odax), see Neoodax balteatus
- obscurus Castelnau, 1873 (Eleotris), see Afurcagobius suppositus
- obscurus Castelnau, 1875 (Atherinichthys), see Atherinosoma presbyteroides
- obscurus Castelnau, 1875 (Stenophus), see Congrogadus subducens
- obscurus Castelnau, 1879 (Aplodactylus), see Crinodus lophodon
- obscurus Cuvier, 1829 (Therapon), see Terapon theraps
- obscurus DeKay, 1842 (Centrarchus), see Micropterus dolomieu
- obscurus Dæderlein, 1883 (Mesoprion), see Lutjanus argentimaculatus
- obscurus Ehrenberg, 1871 (Hippocampus), see Hippocampus fuscus
- obscurus Garman, 1895 (Rivulus), see Rivulus marmoratus
- obscurus Gìnther, 1861 (Ophiocephalus), see Parachanna obscura
- obscurus Gìnther, 1863 (Auchenipterus), see Trachycorystes trachycorystes
- obscurus Gìnther, 1864 (Copidoglanis), see Plotosus limbatus
- obscurus Hemprich & Ehrenberg, 1856 (Hippocampus), see Hippocampus ramulosus
- obscurus Hensel, 1870 (Tetragonopterus), see Astyanax aeneus
- obscurus Hildebrand, 1946 (Ophioscion), see Ophioscion scierus
- obscurus Klunzinger, 1872 (Paradules), see Nannoperca obscura
- obscurus Lesueur, 1818 (Squalus), see Carcharhinus obscurus
- obscurus Macleay, 1881 (Mesoprion), see Lutjanus argentimaculatus
- obscurus Parin, 1984 (Physiculus), see Gadella obscurus
- obscurus Pellegrin, 1908 (Labeo), see Labeo parvus
- obscurus Peters, 1855 (Gobius), see Bathygobius fuscus
- obscurus Poll, 1948 (Clarias), see Clarias buthupogon
- obscurus Poll, 1978 (Lamprologus), see Neolamprologus obscurus
- obscurus Popta, 1904 (Acrochordonichthys), see Acrochordonichthys melanogaster
- obscurus Rendahl, 1922 (Copidoglanis), see Neosilurus rendahli
- obscurus Senna, 1924 (Parophiocephalus), see Parachanna obscura
- obscurus Smith, 1945 (Nemacheilus), see Schistura waltoni
- obscurus Smith, 1945 (Noemacheilus), see Schistura waltoni
- obscurus Thiolli¨re, 1857 (Pomacentrus), see Stegastes lividus
- obscurus Vaillant, 1888 (Centroscymnus), see Scymnodon obscurus
- obsoleta Forssk¥l, 1775 (Sciaena), see Lethrinus ramak
- obsoletus (Syngnathus)
- obsoletus Bibron, 1856 (Typhlus), see Syngnathus obsoletus
- obsoletus Dor, 1984 (Lethrinus), see Lethrinus ramak
- obstusirostris Moreau, 1881 (Carcharias), see Carcharhinus plumbeus
- Obtortiophagus Whitley, 1933 (Gobiidae), see Cryptocentrus
- ?obturostris Mai, 1978 (Garra)
- obtusa (Gorgasia)
- obtusa Britski & Garavello, 1984 (Pseudotothyris)
- ?obtusa Rendahl, 1921 (Squamicreedia)
- obtusa Ehrenberg, 1871 (Raja), see Dasyatis imbricata
- obtusa Gill & Townsend, 1897 (Raia), see Bathyraja parmifera
- obtusa Swainson, 1839 (Ophisoma), see Conger conger
- obtusata Cuvier, 1829 (Sphyraena), see Sphyraena chrysotaenia
- obtusauris Evermann & Seale, 1907 (Cephalopholis), see Cephalopholis aurantia
- obtusaurus Masuda et al., 1984 (Cephalopholis), see Cephalopholis aurantia
- obtusiceps Macleay, 1882 (Caranx), see Caranx speciosus
- obtusidens Valenciennes, 1847 (Leporinus)
- obtusidens Valenciennes, 1836 (Curimatus), see Leporinus obtusidens
- obtusifrons Allen, 1991 (Hephaestus)
- ?obtusifrons Fowler, 1934 (Myersiscus)
- obtusifrons Mees & Kailola, 1977 (Therapon), see Hephaestus obtusifrons
- obtusifrons Penrith, 1967 (Clinus), see Clinus heterodon
- obtusirostra Jespersen & T¥ning, 1919 (Margrethia)
- ?obtusirostra Wu & Wu, 1988 (Triplophysa)
- obtusirostra Brusina, 1902 (Acipenser ruthenus var. ), see Acipenser ruthenus
- obtusirostre Paxton, 1979 (Myctophum)
- obtusirostre Dor, 1984 (Helcogramma)
- obtusirostre Klunzinger, 1871 (Tripterygium), see Helcogramma obtusirostre
- obtusirostris (Acipenser)
- obtusirostris Blache & Bauchot, 1972 (Dalophis)
- obtusirostris Gìnther, 1866 (Exocoetus)
- obtusirostris Regan, 1917 (Potamothrissa)
- obtusirostris Zheng & Chen, 1980 (Liniparhomaloptera)
- obtusirostris (Barbus)
- obtusirostris Sazonov & Iwamoto, 1992 (Ventrifossa)
- obtusirostris Eigenmann, Henn & Wilson, 1914 (Ceratobranchia)
- obtusirostris Berg, 1908 (Salmothymus)
- obtusirostris Isbrìcker, 1980 (Hypostomus)
- obtusirostris (Puntius), see Mystacoleucus marginatus
- obtusirostris Banarescu & Nalbant, 1966 (Microphysogobio brevirostris), see Microphysogobio brevirostris
- obtusirostris Borodin, 1930 (Aphareus), see Cubiceps gracilis
- obtusirostris Boulenger, 1909 (Pellonula), see Potamothrissa obtusirostris
- obtusirostris Guichenot, 1866 (Datnia), see Mesopristes elongatus
- obtusirostris Gìnther, 1862 (Crenicichla), see Crenicichla strigata
- obtusirostris Gìnther, 1862 (Pomacentrus), see Pristotis jerdoni
- obtusirostris Gìnther, 1864 (Eutropius), see Schilbe mystus
- obtusirostris Heckel, 1851 (Salar), see Salmothymus obtusirostris
- obtusirostris Holleman, 1986 (Tripterygium), see Helcogramma obtusirostre
- obtusirostris Moreau, 1881 (Carcharias), see Carcharhinus plumbeus
- obtusirostris Steindachner, 1881 (Sternopygus), see Sternopygus macrurus
- obtusirostris Steindachner, 1907 (Plecostomus), see Hypostomus obtusirostris
- obtusirostris Stokell, 1941 (Retropinna), see Retropinna retropinna
- obtusirostris Vaillant, 1888 (Bathysaurus), see Bathysaurus mollis
- obtusirostris Valenciennes, 1842 (Barbus), see Mystacoleucus marginatus
- obtusirostris Valenciennes, 1842 (Gobio), see Gobio gobio
- obtusirostris Valenciennes, 1847 (Meletta), see Herklotsichthys quadrimaculatus
- obtusirostris Wu & Wang, 1931 (Pseudogobio), see Microphysogobio brevirostris
- obtusirostris van Hasselt, 1823 (Barbus), see Mystacoleucus marginatus
- ?obtusum Poey, 1860 (Haemulon)
- obtusus (Alburnus)
- obtusus Lee et al., 1980 ( Rhinichthysatratulus)
- obtusus Axelrod, 1993 (Mylochromis)
- obtusus Regan, 1908 (Salvelinus)
- obtusus Schultz, 1938 (Phallocottus)
- obtusus Dor, 1984 (Rhinobatos)
- obtusus Couch, 1848 (Hemiramphus), see Belone belone
- obtusus Day, 1878 (Triaenodon), see Carcharhinus amboinensis
- obtusus De la Pylaie, 1835 (Leuciscus), see Phoxinus phoxinus
- obtusus Eccles & Trewavas, 1989 (Maravichromis), see Mylochromis obtusus
- obtusus Garman, 1899 (Atopichthys), see Gorgasia obtusa
- obtusus Ginsburg, 1933 (Hippocampus), see Hippocampus reidi
- obtusus Heckel, 1843 (Discognathus), see Garra rufa
- obtusus Klunzinger, 1871 (Galeocerdo), see Galeocerdo cuvier
- obtusus Klunzinger, 1872 (Galaxias), see Galaxias maculatus
- obtusus Miranda-Ribeiro, 1911 (Otocinclus), see Pseudotothyris obtusa
- obtusus Mìller & Henle, 1841 (Rhinobatus), see Rhinobatos obtusus
- obtusus Parr, 1927 (Dolopichthys), see Oneirodes eschrichtii
- obtusus Poey, 1860 (Scarus), see Scarus coeruleus
- obtusus Poey, 1861 (Squalus), see Carcharhinus leucas
- obtusus Trewavas, 1935 (Haplochromis), see Mylochromis obtusus
- obtusus authors (Chiloconger), see Gorgasia obtusa
- obtusus van Hasselt, Mìller, 1873 (Dentex), see Nemipterus peronii
- obud Herre, 1923 (Ariosoma)
- obuduense Huber, 1978 (Aphyosemion), see Fundulopanchax gardneri nigerianus
- obuduense Parenti, 1981 (Fundulopanchax), see Fundulopanchax gardneri nigerianus
- obuduense Wright & Geremy, 1974 (Aphyosemion gardneri), see Fundulopanchax gardneri nigerianus
- obuduense Wright & Jeremy, 1974 (Aphyosemion gardneri), see Fundulopanchax gardneri nigerianus
- obvelatus Valenciennes, 1844 (Prionodon), see Carcharhinus obscurus
- ocampoi Alvarez, 1963 (Chirostoma), see Chirostoma humboldtianum
- occa (Caelorinchus)
- Occa Jordan & Evermann, 1898 (Agonidae), see Occella
- occa Arai, 1983 (Coelorinchus), see Caelorinchus occa
- occa Goode & Bean, 1885 (Macrurus), see Caelorinchus occa
- occa Marshall, 1973 (Coelorhynchus), see Caelorinchus occa
- Occella Jordan & Hubbs, 1925 (Agonidae)
- occellatus De Vis, 1886 (Neorhombus), see Pseudorhombus arsius
- occidentale Buckup & Reis, 1997 (Characidium)
- occidentale Clausen, 1966 (Aphyosemion), see Fundulopanchax occidentalis
- occidentale Clausen, 1966 (Roloffia), see Fundulopanchax occidentalis
- occidentale Ginsburg, 1933 (Aruma), see Aruma histrio
- occidentale Ginsburg, 1933 (Gobiosoma), see Aruma histrio
- occidentalis Hutchins, 1976 (Batrachomoeus)
- occidentalis Woods, 1973 (Hoplostethus)
- occidentalis Meek & Hildebrand, 1916 (Roeboides)
- occidentalis Paugy, 1984 (Micralestes)
- occidentalis ( Nannocharaxniloticus)
- occidentalis Daget & Gosse, 1984 (Nannocharax)
- occidentalis Ayres, 1854 (Catostomus)
- occidentalis L©vªque, 1990 ( Barbusbynni)
- occidentalis Parenti, 1981 (Fundulopanchax)
- occidentalis Rosen & Bailey, 1963 (Poeciliopsis)
- occidentalis Iwamoto, 1979 (Echinomacrurus)
- occidentalis Geistdoerfer, 1990 (Ventrifossa)
- occidentalis Daget, 1954 ( Cromerianilotica)
- occidentalis (Brachyhypopomus)
- occidentalis Ogilby, 1899 (Galaxias)
- occidentalis Gosse, 1984 ( Hyperopisusbebe)
- occidentalis Stephens, 1970 (Emblemariopsis)
- occidentalis Thys, 1963 (Sarotherodon)
- occidentalis Goode & Bean, 1896 (Epigonus)
- occidentalis Hutchins, 1984 (Aspasmogaster)
- occidentalis Maug©, 1986 (Gobionellus)
- occidentalis Larson, 1990 (Pleurosicya)
- occidentalis Greenfield, 1979 (Starksia)
- occidentalis Allen & Hoese, 1975 (Parma)
- occidentalis Vaillant, 1897 (Nebris)
- occidentalis Whitley, 1951 (Lepidoperca)
- occidentalis Lindberg, 1950 (Anoplagonus)
- occidentalis Lindberg, 1935 (Bothragonus)
- occidentalis (Fricke, 1990) (Psychrolutes)
- occidentalis Bailey & Stewart, 1984 (Auchenoglanis)
- occidentalis Eigenmann & Bean, 1910 (Cetopsogiton)
- occidentalis Isbrìcker, 1980 (Ancistrus)
- occidentalis Boeseman, 1968 (Hypostomus)
- occidentalis Pellegrin, 1933 (Chiloglanis)
- occidentalis De Vos, 1986 (Parailia)
- ?occidentalis Fricke, 1983 ( Synchiropuspicturatus)
- ?occidentalis Meek, 1902 (Lepomis)
- ?occidentalis Dum©ril, 1858 (Echeneis)
- ?occidentalis Balushkin, 1976 ( Nototheniacanina)
- occidentalis Agassiz, 1831 (Uranoscopus), see Uranoscopus scaber
- occidentalis Baird & Girard, 1853 (Heterandria), see Poeciliopsis occidentalis
- occidentalis Baird & Girard, 1854 (Leucosomus), see Lavinia exilicauda
- occidentalis Blache & Miton, 1961 (Barilius niloticus), see Leptocypris niloticus
- occidentalis Boulenger, 1909 (Gobius), see Gobionellus occidentalis
- occidentalis Boulenger, 1909 (Oxyurichthys), see Gobionellus occidentalis
- occidentalis Bruun, 1937 (Synaphobranchus indicus), see Synaphobranchus affinis
- occidentalis Bussing, 1987 (Hypopomus), see Brachyhypopomus occidentalis
- occidentalis Cadenat, 1959 (Antennarius), see Antennarius striatus
- occidentalis Cadenat, 1959 (Triantennatus), see Antennarius striatus
- occidentalis Castelnau, 1873 (Mugil), see Mugil cephalus
- occidentalis Clausen, 1966 (Callopanchax), see Fundulopanchax occidentalis
- occidentalis Cuvier, 1829 (Gasterosteus), see Pungitius pungitius
- occidentalis Daget, 1962 (Tilapia), see Sarotherodon occidentalis
- occidentalis DeKay, 1842 (Amia), see Amia calva
- occidentalis DeKay, 1842 (Conger), see Conger oceanicus
- occidentalis Eigenmann & Bean, 1907 (Paracetopsis), see Cetopsogiton occidentalis
- occidentalis Fowler, 1944 (Cheironebris), see Nebris occidentalis
- occidentalis Fricke, 1990 (Cottunculoides), see Psychrolutes occidentalis
- occidentalis Fritsch, 1884 (Gymnotorpedo), see Torpedo nobiliana
- occidentalis Gill (ex Brevoort), 1861 (Pygosteus), see Pungitius pungitius
- occidentalis Gill (ex Klein), 1861 (Narcacion), see Torpedo nobiliana
- occidentalis Gill, 1861 (Noturus), see Noturus flavus
- occidentalis Gill, 1862 (Tetronarce), see Torpedo nobiliana
- occidentalis Gill, 1863 (Myriopristis), see Myripristis leiognathus
- occidentalis Gill, 1863 (Myripristis), see Myripristis leiognathus
- occidentalis Gill, 1863 (Oligoplites), see Pungitius pungitius
- occidentalis Goode & Bean, 1885 (Malacocephalus), see Ventrifossa occidentalis
- occidentalis Greenwood, 1959 (Astatoreochromis alluaudi), see Astatoreochromis alluaudi
- occidentalis Gìnther, 1860 (Chorinemus), see Oligoplites saurus
- occidentalis Gìnther, 1870 (Monacanthus), see Monacanthus ciliatus
- occidentalis Gìnther, 1899 (Petersius), see Micralestes occidentalis
- occidentalis Hopkins, 1991 (Hypopomus), see Brachyhypopomus diazi
- occidentalis Jordan, 1885 (Luxilinus), see Lavinia exilicauda
- occidentalis Kaj, 1954 (Phoxinus percnurus), see Eupallasella perenurus
- occidentalis Lindberg & Andriashev, 1937 (Sarritor frenatus), see Leptagonus frenatus
- occidentalis Linnaeus, 1758 (Gasterosteus), see Pungitius pungitius
- occidentalis Lænnberg & Rendahl, 1920 (Discognathus), see Garra ornata
- occidentalis Majorowa, 1934 (Engraulis encrasicholus ponticus nat. ), see Engraulis encrasicholus
- occidentalis Parr, 1946 (Pawnurus), see Ventrifossa occidentalis
- occidentalis Paugy, 1984 (Hemigrammopetersius), see Micralestes occidentalis
- occidentalis Pellegrin, 1901 (Ailia), see Parailia occidentalis
- occidentalis Regan, 1904 (Xenocara), see Ancistrus occidentalis
- occidentalis Regan, 1914 (Hypopomus), see Brachyhypopomus occidentalis
- occidentalis Reizer, Mattei & Chevalier, 1973 (Petrocephalus bovei), see Petrocephalus bovei guineensis
- occidentalis Robins, Bailey, Bond, Brooker, Lachner, Lea & Scott, 1991 (Roloffia), see Fundulopanchax occidentalis
- occidentalis Sal'nikov & Malyatskii, 1934 (Huso huso ponticus nat. ), see Huso huso
- occidentalis Schmidt, 1927 (Gymnocanthus tricuspis), see Gymnocanthus tricuspis
- occidentalis Schmidt, 1928 (Anguilla australis f. ), see Anguilla australis
- occidentalis Steindachner, 1880 (Cetopsis), see Cetopsogiton occidentalis
- occidentalis Storer, 1843 (Torpedo), see Torpedo nobiliana
- occidentalis Swainson, 1839 (Dactylopterus), see Dactylopterus volitans
- occidentalis Valenciennes, 1840 (Pimelodus), see Auchenoglanis occidentalis
- occidentalis Weber & de Beaufort, 1929 (Ambassis confinis), see Parambassis confinis
- occidentalis Whitley, 1931 (Cleidopus gloriamaris), see Cleidopus gloriamaris
- ?occipitalis Kotthaus, 1973 (Chelidoperca)
- occipitalis Gill, 1859 (Hemiramphus), see Hyporhamphus intermedius
- occipitalis Poey, 1860 (Scorpaena), see Scorpaena inermis
- occloi Isbrìcker, 1980 (Ancistrus)
- occulta Vooren & da Silva, 1992 (Squatina)
- occultidens Snoeks, 1988 (Haplochromis)
- ?oceanica Nilsson, 1832 (Clupea harengus f. ), see Clupea harengus
- oceanica Fourmanoir, 1970 (Scombrosphyraena), see Sphyraenops bairdianus
- oceanica Garman, 1913 (Cestracion), see Sphyrna lewini
- oceanica Gill (ex DeKay), 1861 (Isognatha), see Conger oceanicus
- oceanica Mitchill, 1818 (Anguilla), see Conger oceanicus
- oceanicum Okamura & Kitajima, 1984 (Glyptophidium), see Glyptophidium oceanium
- oceanicus Smith [C.L.], 1985 (Conger)
- oceanicus Maug©, 1986 (Gobionellus)
- oceanicus Hardenberg, 1933 (Stolephorus insularis), see Stolephorus insularis
- oceanicus Jordan & Evermann, 1903 (Lagocephalus), see Lagocephalus lagocephalus
- oceanicus Jordan & Evermann, 1903 (Rhinoscopelus), see Myctophum affine
- oceanicus Kyushin et al., 1977 (Lagocephalus lagocephalus), see Lagocephalus lagocephalus
- oceanicus Lacep¨de, 1802 (Holocentrus), see Epinephelus fasciatus
- oceanicus Pallas (ex Gronovius), 1770 (Gobius), see Gobionellus oceanicus
- oceanicus Plumier, 1801 (Thynnus), see Thunnus alalunga
- oceanicus Valenciennes, 1836 (Blennius), see Hypleurochilus fissicornis
- oceanium Smith & Radcliffe, 1913 (Glyptophidium)
- Oceanomyzon Fowler, 1908 (Petromyzontinae), see Petromyzon
- oceanops Robins & Ray, 1986 (Gobiosoma)
- Oceanops Jordan & Seale, 1906 (Malacanthinae), see Malacanthus
- oceanops Jordan, 1904 (Elacatinus), see Gobiosoma oceanops
- oceanus Iwamoto & Shcherbachev, 1991 ( Coryphaenoidesserrulatus)
- ocella Garman, 1899 (Venefica)
- ?ocella Garman, 1881 (Rhinichthys)
- ocella Garman, 1899 (Eretmichthys), see Eretmichthys pinnatus
- ocellaris Linnaeus, 1758 (Blennius)
- ocellaris Bloch & Schneider, 1801 (Cichla)
- ocellaris Valenciennes, 1837 (Awaous)
- ocellaris Cuvier, 1830 (Amphiprion)
- ?ocellaris Linnaeus, 1758 (Labrus)
- ocellaris Broussonet, 1782 (Gobius), see Awaous ocellaris
- ocellaris DeKay, 1842 (Platessa), see Paralichthys dentatus
- ocellaris Jordan & Gilbert, 1882 (Fundulus), see Fundulus confluentus
- ocellaris Klausewitz, 1957 (Tetraodon), see Monotretus fangi
- ocellata Vari, 1989 (Curimata)
- ocellata van Hasselt, 1823 (Homaloptera)
- ocellata Springer, 1986 (Chalaroderma)
- ocellata Gilbert, 1892 (Bollmannia)
- ocellata (Pseudocoris)
- ocellata Greenfield, 1979 (Starksia)
- ocellata Gìnther, 1859 (Pogonoperca)
- ocellata Amaoka, 1969 (Taeniopsetta)
- ocellata McEachran & Dunn, 1998 (Leucoraja)
- ocellata (Torpedo)
- ?ocellata Von Bonde, 1923 (Amia)
- ?ocellata McClelland, 1839 (Schistura)
- ?ocellata Kner, 1868 ( Gobiuspetrophilus)
- ?ocellata Cuvier, 1829 (Percis)
- ocellata Anderson, 1994 (Gymnelopsis), see Gymnelopsis ocellatus
- ocellata Bleeker, 1851 (Caranx praeustus var. ), see Carangoides praeustus
- ocellata Cuvier, 1832 (Rhynchobdella), see Macrognathus aculeatus
- ocellata Dum©ril, 1861 (Fistularia), see Fistularia tabacaria
- ocellata Gilbert, 1892 (Bollmania), see Bollmannia ocellata
- ocellata Heckel, 1843 (Cyrene), see Labiobarbus ocellatus
- ocellata Jordan, 1888 (Quenselia), see Microchirus ocellatus
- ocellata Klunzinger, 1880 (Labrichthys tetrica var. ), see Notolabrus tetricus
- ocellata Klunzinger, 1880 (Scatophagus argus var. ), see Scatophagus argus
- ocellata Lee et al., 1980 (Sciaenops), see Sciaenops ocellatus
- ocellata Leigh-Sharpe, 1926 (Kapparaia), see Leucoraja ocellata
- ocellata Lesueur, 1825 (Muraenophis), see Myrichthys ocellatus
- ocellata Lesueur, 1856 (Muraenopsis), see Myrichthys ocellatus
- ocellata Linnaeus, 1766 (Perca), see Sciaenops ocellatus
- ocellata McClelland, 1839 (Cobitis), see Acanthocobitis botia
- ocellata Menni, Ringuelet & Aramburu, 1984 (Muraena), see Gymnothorax ocellatus
- ocellata Mitchill, 1815 (Raja), see Leucoraja ocellata
- ocellata Pappe, 1853 (Clupea), see Sardinops sagax
- ocellata Perugia, 1897 (Boggiania), see Crenicichla semifasciata
- ocellata Peters, 1864 (Channa), see Channa asiatica
- ocellata Poey, 1865 (Chaenopsis), see Chaenopsis ocellatus
- ocellata Rafinesque, 1810 (Torpedo), see Torpedo torpedo
- ocellata Roberts, 1989 (Dangila), see Labiobarbus ocellatus
- ocellata Robins & Ray, 1986 (Chaenopsis), see Chaenopsis ocellatus
- ocellata Schultz & Marshall, 1954 (Wetmorella), see Wetmorella nigropinnata
- ocellata Smith & Radcliffe, 1912 (Malthopsis), see Malthopsis annulifera
- ocellata Soldatov, 1922 (Gymnelopsis), see Gymnelopsis ocellatus
- ocellata Steindachner, 1870 (Crayracion fluviatilis var. ), see Chelonodon biocellatus
- ocellata Valenciennes (ex Kuhl & van Hasselt), 1846 (Balitora), see Homaloptera ocellata
- ocellata Vari, 1982 (Hemiodopsis), see Hemiodus ocellatus
- ocellata de Beaufort, 1933 (Betta), see Betta unimaculata
- ocellatum Huber & Radda, 1977 (Aphyosemion)
- ocellatum Gìnther, 1880 (Tetrabrachium)
- ocellatum Pellegrin, 1899 (Ctenopoma)
- ocellatum Mìller & Henle, 1838 (Hemiscyllium)
- ocellatum Eigenmann, 1915 (Mylosoma), see Mylossoma duriventre
- ocellatum Gìnther, 1859 (Plectropoma), see Acanthistius ocellatus
- ocellatum Jardine & Schomburgk, 1841 (Xiphostoma), see Boulengerella cuvieri
- ocellatum Radda, 1977 (Mesoaphyosemion), see Aphyosemion ocellatum
- ocellatum Tilesius, 1811 (Ophidium), see Opisthocentrus ocellatus
- ocellatus Agassiz, 1831 (Gymnothorax)
- ocellatus (Myrichthys)
- ocellatus Hutchins, 1974 (Halophryne)
- ocellatus Ferreira, Zuanon & dos Santos, 1996 (Hemiodus)
- ocellatus Wu, 1964 (Rhodeus)
- ocellatus (Labiobarbus)
- ocellatus Huber, 1996 (Nothobranchius)
- ocellatus Costa, Nielsen & Luca, 2001 (Simpsonichthys)
- ocellatus Herald, 1953 (Corythoichthys)
- ocellatus Robins & Ray, 1986 (Antennarius)
- ocellatus Ayres, 1855 (Anarrhichthys)
- ocellatus Hayashi, 1984 (Apogonichthys)
- ocellatus Cantor, 1842 (Macropodus)
- ocellatus Prashad & Mukerji, 1929 (Parasphaerichthys)
- ocellatus (Neosynchiropus)
- ocellatus Gill (ex Poey), 1865 (Chaenopsis)
- ocellatus (Gronow, 1854) (Parachaetodon)
- ocellatus G©ry, Planquette & Le Bail, 1996 (Astyanax)
- ocellatus (Chaetodon)
- ocellatus Swainson, 1839 (Astronotus)
- ocellatus (Fowler, 1937) (Rhinogobius)
- ocellatus Bauchot & Quignard, 1973 (Symphodus)
- ocellatus Gill, 1863 (Sciaenops)
- ocellatus Schultz, 1953 (Grammistops)
- ocellatus Paxton et al., 1989 (Acanthistius)
- ocellatus Lindberg & Krasyukova, 1975 (Opisthocentrus)
- ocellatus Soldatov, 1922 (Gymnelopsis)
- ocellatus Toyoshima, 1985 (Lycodes)
- ocellatus Robins & Ray, 1986 (Bothus)
- ocellatus von Bonde, 1922 (Symphurus)
- ocellatus Starks & Thompson, 1910 (Pleuronichthys)
- ocellatus Gìnther, 1862 (Psammodiscus)
- ocellatus (Microchirus)
- ocellatus Mould, 1994 (Aetobatus)
- ocellatus Compagno, 1986 (Rhinobatos)
- ocellatus (Squalus)
- ?ocellatus Mai, 1978 (Puntius)
- ?ocellatus Gìnther, 1887 (Neobythites)
- ?ocellatus Howell Rivero, 1936 (Paraclinus)
- ?ocellatus Valenciennes, 1836 (Myxodes)
- ?ocellatus Herre, 1935 (Callogobius)
- ?ocellatus Day, 1873 (Gobius)
- ?ocellatus Walbaum, 1792 (Scomber)
- ?ocellatus Weed, 1961 (Aseraggodes)
- ?ocellatus Bloch & Schneider, 1801 (Silurus)
- ?ocellatus Linnaeus, 1758 (Tetraodon)
- ocellatus (Barbus), see Puntius ocellatus
- ocellatus (Macrognathus), see Macrognathus aculeatus
- ocellatus ?????????? (Tetraodon), see Chelonodon biocellatus
- ocellatus Agassiz, 1831 (Lobotes), see Astronotus ocellatus
- ocellatus Agassiz, 1831 (Rhombus), see Bothus ocellatus
- ocellatus Barsukov, 1959 (Anarhichthys), see Anarrhichthys ocellatus
- ocellatus Bennett, 1830 (Tetrodon), see Canthigaster bennetti
- ocellatus Bloch & Schneider, 1801 (Lophius histrio var. ), see Antennarius ocellatus
- ocellatus Bloch, 1787 (Chaetodon), see Parachaetodon ocellatus
- ocellatus Bonnaterre, 1788 (Squalus), see Hemiscyllium ocellatum
- ocellatus Boschung, 1992 (Perca), see Sciaenops ocellatus
- ocellatus Chen & Shao, 1995 (Pseudocoris), see Pseudocoris ocellata
- ocellatus Cuvier, 1831 (Platax), see Parachaetodon ocellatus
- ocellatus Dawson, 1984 (Microphis), see Choeroichthys sculptus
- ocellatus Devincenzi, 1920 (Notorhynchus), see Notorynchus cepedianus
- ocellatus Donovan, 1806 (Cyclopterus), see Lepadogaster lepadogaster purpurea
- ocellatus Duncker, 1910 (Doryichthys), see Choeroichthys sculptus
- ocellatus Ehrenberg, 1836 (Opisthognathus), see Opistognathus nigromarginatus
- ocellatus Ehrenberg, 1836 (Opistognathus), see Opistognathus nigromarginatus
- ocellatus Eigenmann & Eigenmann, 1889 (Curimatus), see Curimata ocellata
- ocellatus Eigenmann, 1909 (Poecilobrycon), see Nannostomus unifasciatus
- ocellatus Forssk¥l, 1775 (Labrus), see Symphodus ocellatus
- ocellatus Fourmanoir & Crosnier, 1964 (Apogon), see Apogon guamensis
- ocellatus Fowler, 1937 (Tukagobius), see Rhinogobius ocellatus
- ocellatus Fowler, 1937 (Tukugobius), see Rhinogobius ocellatus
- ocellatus Fricke, 1981 (Synchiropus), see Neosynchiropus ocellatus
- ocellatus Gilchrist & Thompson, 1908 (Blennius), see Chalaroderma ocellata
- ocellatus Gilchrist & Thompson, 1916 (Galeichthys), see Arius feliceps
- ocellatus Gronow, 1854 (Chaetodon), see Parachaetodon ocellatus
- ocellatus Gìnther, 1862 (Hygrogonus), see Astronotus ocellatus
- ocellatus Gìnther, 1880 (Pseudorhombus), see Taeniopsetta ocellata
- ocellatus Heemstra & Gon, 1986 (Monochirus), see Microchirus ocellatus
- ocellatus Hensel, 1868 (Rivulus), see Rivulus marmoratus
- ocellatus Jordan & Evermann, 1900 (Platophrys), see Microchirus ocellatus
- ocellatus Kaup, 1860 (Priodonophis), see Gymnothorax ocellatus
- ocellatus Kner & Steindachner, 1867 (Platyglossus), see Labrichthys unilineatus
- ocellatus Kner, 1866 (Pseudoperilampus), see Rhodeus ocellatus
- ocellatus Kuhl, 1823 (Myliobatis), see Aetobatus ocellatus
- ocellatus Linnaeus, 1758 (Pleuronectes), see Microchirus ocellatus
- ocellatus Longley, 1927 (Andracanthus), see Starksia ocellata
- ocellatus Mar©chal & Poll, 1991 (Lamprologus), see Lamprologus kungweensis
- ocellatus McCoy, 1867 (Galaxias), see Galaxias truttaceus
- ocellatus Norman, 1926 (Rhinobatus), see Rhinobatos ocellatus
- ocellatus Norman, 1934 (Neorhombus), see Pseudorhombus arsius
- ocellatus Pallas, 1770 (Callionymus), see Neosynchiropus ocellatus
- ocellatus Peters, 1855 (Tetrodon), see Canthigaster bennetti
- ocellatus Poey, 1860 (Hippoglossus), see Syacium micrurum
- ocellatus Poll, 1938 (Synodontis notatus var. ), see Synodontis notatus
- ocellatus Poll, 1952 (Lamprologus), see Lamprologus kungweensis
- ocellatus Risso, 1810 (Lepadogaster), see Diplecogaster bimaculata
- ocellatus Risso, 1827 (Sphagebranchus), see Dalophis imberbis
- ocellatus Robins & Ray, 1986 (Ophichthus), see Myrichthys ocellatus
- ocellatus Seegers, 1985 (Paranothobranchius), see Nothobranchius ocellatus
- ocellatus Snyder, 1909 (Microphis), see Choeroichthys sculptus
- ocellatus Steindachner, 1876 (Clinus), see Starksia ocellata
- ocellatus Steindachner, 1909 (Julidochromis), see Lamprologus kungweensis
- ocellatus Storer, 1857 (Zeus), see Zenopsis conchifer
- ocellatus Valenciennes, 1833 (Pteraclis), see Pteraclis velifera
- ocellatus Valenciennes, 1836-49 (Sebastes), see Sebastes capensis
- ocellatus Valenciennes, 1840 (Scarus), see Bolbometopon bicolor
- ocellatus Weber, 1913 (Apogon), see Apogonichthys ocellatus
- ocellatus Whitehead, 1985 (Sardinops), see Sardinops sagax
- ocellicauda Pellegrin, 1923 (Hemigrammocharax)
- ocellicauda Nichols, 1955 (Tateurndina)
- ocellicauda Gìnther, 1873 (Lophiogobius)
- ocellicauda Boulenger, 1907 (Nannocharax), see Hemigrammocharax ocellicauda
- ocellicauda Richardson, 1844 (Philypnus), see Bostrychus sinensis
- ocellicauda Todd, 1836 (Amia), see Amia calva
- ocellicaudus Allen, Kuiter & Randall, 1994 (Apogon)
- ocellicaudus Cuvier, 1831 (Chaetodon), see Chaetodon melannotus
- ocellicaudus Gìnther, 1873 (Lophiogobius), see Lophiogobius ocellicauda
- ocellicaudus Holly, 1930 (Hemigrammonannocharax), see Hemigrammocharax ocellicauda
- ocellicaudus Myers, 1926 (Thrissocharax), see Hemigrammocharax ocellicauda
- ocellicaudus Pellegrin, 1923 (Hemigrammocharax), see Hemigrammocharax ocellicauda
- ocellicaudus Whitley, 1931 (Cassigobius), see Lophiogobius ocellicauda
- ocellicincta Allen & Randall, 1977 (Canthigaster)
- ocellifer Ortega & Vari, 1986 (Hemigrammus)
- ocellifer Boulenger, 1899 (Pelmatochromis)
- ocellifer Boulenger, 1900 (Synodontis)
- ?ocellifer Mocquard, 1888 (Clinus)
- ocellifer Castelnau, 1873 (Callionymus), see Synchiropus papilio
- ocellifer Eigenmann, 1903 (Holopristis), see Hemigrammus ocellifer
- ocellifer Franz, 1910 (Chaetodon), see Chaetodon speculum
- ocellifer Gosse, 1986 (Microctenopoma muriei), see Microctenopoma muriei
- ocellifer Nichols, 1928 (Anabas muriei), see Microctenopoma muriei
- ocellifer Norris, 1995 (Anabas muriei), see Microctenopoma muriei
- ocellifer Regan, 1905 (Pseudorhombus), see Pseudorhombus pentophthalmus
- ocellifer Steindachner, 1882 (Tetragonopterus), see Hemigrammus ocellifer
- ocellifera Fowler, 1946 (Dampieria), see Labracinus lineatus
- ocellifera Regan, 1906 (Raia), see Raja miraletus
- ocelligena McCulloch, 1926 (Callionymus), see Repomucenus calcaratus
- ocellipinnis Ahl, 1923 (Paracoradion), see Tilodon sexfasciatum
- ocellipinnis Macleay, 1878 (Chaetodon), see Tilodon sexfasciatum
- ocheticus Fraser-Brunner, 1940 (Stephanolepis), see Stephanolepis diaspros
- Ochetobius Gìnther, 1868 (Cyprinidae)
- ochiaii Fricke, 1981 (Callionymus)
- ochiutus Nardo (ex Chiereghini), 1847 (Salmo), see Argentina sphyraena
- Ochmacanthus Eigenmann, 1912 (Stegophilinae)
- ochotensis Kobyliansky, 1986 (Lipolagus)
- ochotensis Anderson, 1982 (Gymnelopsis)
- ochotensis Gilbert & Burke, 1912 (Artediellus)
- ochotensis Schmidt, 1927 (Icelus)
- ochotensis Neyelov, 1979 (Myoxocephalus)
- ochotensis Yabe, 1995 (Zesticelus)
- ochotensis Popov, 1931 ( Eumicrotremusderjugini)
- ochotensis Schmidt, 1904 (Liparis)
- ?ochotensis Ueno, 1954 (Opisthocentrus)
- ?ochotensis (Soldatov & Lindberg, 1930) ( Gymnelusviridis)
- ?ochotensis Schmidt, 1916 (Gilbertidia)
- ochotensis Lindberg & Krasyukova, 1975 (Lycodes brevipes), see Lycodes brevipes
- ochotensis Popov, 1931 (Derjuginia), see Gymnelopsis ochotensis
- ochotensis Schmidt, 1929 (Porocottus sellaris), see Microcottus sellaris
- ochotensis Schmidt, 1938 (Bathylagus), see Lipolagus ochotensis
- ochotensis Schmidt, 1950 (Lycodes brevipes), see Lycodes brevipes
- ochotensis Soldatov & Lindberg, 1930 (Gymnelis viridis m. ), see Gymnelus viridis ochotensis
- ochotensis Taranetz, 1937 (Myoxocephalus niger var. ), see Myoxocephalus aenaeus
- ochoterenai Anon, 1994 (Ictalurus)
- ochoterenai de Buen, 1946 (Haustor), see Ictalurus ochoterenai
- Ochotskia Schmidt, 1915 (Cottidae), see Icelus
- ochriamkini Taranetz, 1935 (Stichaeus)
- ochroderma McEachran & Last, 1994 (Notoraja)
- ochrodon Fitzinger, 1832 (Aspius), see Alburnus alburnus
- ochrogenys Boulenger, 1914 (Xenotilapia)
- ochrogenys Boulenger, 1914 (Enantiopus), see Xenotilapia ochrogenys
- ochrogenys Greenwood, 1978 (Enantiopus), see Xenotilapia ochrogenys
- ochrolineata Kossmann & R¤uber, 1877 (Lethrinus nebulosus var. ), see Lethrinus nebulosus
- ochrus Fowler, 1935 (Osteochilus), see Labeo erythropterus
- ocla Nilsson, 1832 (Salmo), see Salmo salar
- ?ocoae Fowler, 1943 ( Moenkhausialepidura)
- oconnori (Aspiorhynchus)
- o'connori Lloyd, 1908 (Schizothorax), see Aspiorhynchus oconnori
- o'connori Tsao, 1964 (Schizothorax), see Aspiorhynchus oconnori
- o'connori Zhang et al., 1995 (Schizothorax), see Aspiorhynchus oconnori
- oconnori Lloyd, 1908 (Schizothorax), see Aspiorhynchus oconnori
- oconnori Ogilby, 1912 (Galaxias), see Galaxias olidus
- oconnori Tchang, Yueh & Hwang, 1964 (Tetrostichodon), see Aspiorhynchus oconnori
- oconnori Whitley, 1935 (Lyragalaxias), see Galaxias olidus
- Ocosia Jordan & Starks, 1904 (Aploactinidae)
- ?ocotlane Jordan & Snyder, 1899 (Chirostoma)
- Ocotlanichthys de Buen, 1945 (Menidiinae), see Chirostoma
- octactis Bleeker, 1863 (Gerres), see Gerres nigri
- octafasciatus Masuda et al., 1984 (Cryptocentrus), see Cryptocentrus octofasciatus
- octatrema Fernholm, 1986 (Eptatretus)
- octatrema Barnard, 1923 (Heptatretus), see Eptatretus octatrema
- octaviana Bæhlke et al., 1989 (Enchelycore)
- octaviana McCosker & Rosenblatt, 1995 (Gymnothorax), see Enchelycore octaviana
- octavianus Myers & Wade, 1941 (Gymnothorax), see Enchelycore octaviana
- ?octavius Abbott, 1899 (Basilichthys)
- octoactinotos Siebert, 1991 (Acantopsis)
- octoactinus Anderson, 1970 (Symphysanodon)
- octocinctus Temminck & Schlegel, 1842 (Serranus), see Epinephelus septemfasciatus
- ?octocirrhus Cuvier, 1829 (Pimelodus)
- octocirrhus van Hasselt, 1823 (Cobitis), see Lepidocephalichthys hasselti
- octocirrus Nijssen, 1970 (Corydoras)
- octoculatus Amaoka, 1969 (Tosarhombus)
- Octocynodon Fowler, 1904 (Corinae), see Halichoeres
- octodecemspinosus Neyelov, 1979 (Myoxocephalus)
- octodecemspinosus Mitchill, 1814 (Cottus), see Myoxocephalus octodecemspinosus
- octodecimspinosus Robins & Ray, 1986 (Cottus), see Myoxocephalus octodecemspinosus
- octodon Fowler, 1928 (Scaridea), see Sparisoma radians
- octofasciata (Parapetenia)
- octofasciata Pellegrin, 1905 (Drepane punctata var. ), see Drepane africana
- octofasciatum Lee et al., 1980 (Cichlasoma), see Parapetenia octofasciata
- octofasciatus Steindachner, 1915 (Leporinus)
- octofasciatus Bloch, 1787 (Chaetodon)
- octofasciatus Regan, 1908 (Cryptocentrus)
- octofasciatus Griffin, 1926 (Epinephelus)
- octofasciatus Nalbant, 1971 (Discochaetodon), see Chaetodon octofasciatus
- octofasciatus Regan, 1903 (Heros), see Parapetenia octofasciata
- octogrammus Eschmeyer & Herald, 1983 (Hexagrammos)
- Octogrammus Bleeker, 1874 (Hexagramminae), see Hexagrammos
- octogrammus Pallas, 1814 (Labrax), see Hexagrammos octogrammus
- octolineata Bleeker, 1872 (Paramia), see Cheilodipterus macrodon
- octolineata Cuvier, 1828 (Diacope), see Lutjanus bengalensis
- octolineatum Roux, 1973 (Parapristipoma)
- octolineatum Valenciennes, 1833 (Pristipoma), see Parapristipoma octolineatum
- octolineatus (Pelates)
- octolineatus Fourmanoir, 1957 (Lutjanus), see Lutjanus notatus
- octolineatus Gronow, 1854 (Chaetodon), see Chaetodon octofasciatus
- octolineatus Jenyns, 1840 (Helotes), see Pelates octolineatus
- octomaculata Rafinesque, 1810 (Cephalepis), see Regalecus glesne
- octomaculatus Britski & Garavello, 1993 (Leporinus)
- octomaculatus Li©nard, 1891 (Cossyphus), see Bodianus axillaris
- octomaculatus Rafinesque, 1810 (Cephalepis), see Regalecus glesne
- Octonema Herzenstein in Herzenstein & Warpachowski, 1887 (Nemacheilinae), see Lefua
- Octonema Martens, 1868 (Nemacheilinae), see Oreonectes
- Octonematichthys Bleeker, 1858 (Claroteinae), see Clarotes
- octonemus Robins & Ray, 1986 (Polydactylus)
- octonemus Girard, 1858 (Polynemus), see Polydactylus octonemus
- Octonus Rafinesque, 1810 (Triglidae), see Peristedion
- octoradiatus (Salmo)
- octo-radiatus Gìnther, 1861 (Mugil), see Liza aurata
- octoradiatus Gìnther, 1861 (Mugil), see Liza aurata
- octospina Smith & Radcliffe, 1912 (Neamia)
- octostigmatus Fricke, 1981 (Callionymus)
- octotaenia Jenkins, 1901 (Pseudocheilinus)
- octotaenia Fourmanoir, 1955 (Paracheilinus)
- octovittata Valenciennes, 1830 (Diacope), see Lutjanus bengalensis
- octovittatus Cuvier, 1828 (Cheilodipterus), see Cheilodipterus macrodon
- octovittatus Lacep¨de, 1801 (Labrus), see Lutjanus bengalensis
- octozona Roberts, 1997 (Serpenticobitis)
- octozona Schultz, 1959 (Eirmotus)
- octozonus Schultz, 1959 (Eirmotus), see Eirmotus octozona
- ?ocularis Waite, 1899 (Parapercis)
- ocularis Ehrenberg, 1828 (Scolopsis), see Scolopsis ghanam
- ocularis Peters, 1868 (Holacanthus), see Centropyge flavissimus
- ocularis Thiolli¨re, 1857 (Amphacanthus), see Siganus puellus
- oculata Fowler, 1934 (Acanthopsoides)
- oculata Bonaparte, 1840 (Squatina)
- ?oculata Bleeker, 1864 ( Ophisurusfasciatus)
- oculata Davy, 1834 (Torpedo), see Torpedo torpedo
- oculata Dum©ril (ex Belon), 1852 (Torpedo), see Torpedo torpedo
- oculata Fowler, 1947 (Starksia), see Labrisomus nigricinctus
- oculata Goren, 1985 (Monishia), see Hetereleotris zanzibarensis
- oculata Leschenault, 1846 (Belone), see Strongylura strongylura
- oculata McClelland, 1839 (Cobitis), see Acanthopsoides oculata
- oculata Risso, 1827 (Solea), see Microchirus ocellatus
- oculata Smith, 1959 (Monishia), see Hetereleotris zanzibarensis
- oculata Swainson, 1839 (Canthidermis), see Canthidermis maculatus
- oculata Trewavas, 1931 (Lethrinops), see Lethrinops oculatus
- oculata Valenciennes, 1833 (Sebastes), see Sebastes capensis
- oculatus Springer, 1988 (Ecsenius)
- oculatus Eccles & Trewavas, 1989 (Buccochromis)
- oculatus Trewavas, 1931 (Lethrinops)
- oculatus Anderson, 1981 (Etelis)
- oculatus Robins & Ray, 1986 (Scombrops)
- oculatus Gilbert, 1890 (Icelinus)
- oculatus Winchell, 1864 (Lepisosteus)
- oculatus Burgess, 1989 (Mystus)
- oculatus Shinohara et al., 1994 (Danaphos)
- ?oculatus Schlegel, 1856 (Ophisurus)
- ?oculatus Lacep¨de, 1801 (Bostrychoides)
- ?oculatus Gìnther, 1870 (Monacanthus)
- oculatus Banks and Solander, 1827 (Squalus), see Hemiscyllium ocellatum
- oculatus Banks, 1838 (Squalus), see Hemiscyllium ocellatum
- oculatus Cope, 1865 (Bryttus), see Lepomis humilis
- oculatus Garman, 1899 (Maurolicus), see Danaphos oculatus
- oculatus Gray, 1831 (Balistes), see Canthidermis maculatus
- oculatus Kaup, 1856 (Pisodonophis), see Myrichthys ocellatus
- oculatus Nakamura et al., 1986 (Sebastes), see Sebastes capensis
- oculatus Plumier, 1803 (Passer), see Bothus lunatus
- oculatus Poey, 1860 (Latebrus), see Scombrops oculatus
- oculatus Rafinesque, 1815 (Pterops), see Bostrychoides oculatus
- oculatus Regan & Trewavas, 1929 (Astronesthes), see Astronesthes richardsoni
- oculatus Risso, 1827 (Sphagebranchus), see Dalophis imberbis
- oculatus Robins & Ray, 1986 (Myrichthys), see Myrichthys ocellatus
- oculatus Trewavas, 1935 (Haplochromis), see Buccochromis oculatus
- oculatus Valenciennes, 1828 (Serranus), see Etelis oculatus
- oculatus Valenciennes, 1840 (Bagrus), see Mystus oculatus
- oculatus Winchell, 1864 (Cylindrosteus), see Lepisosteus oculatus
- oculatus Winchell, 1864 (Lepidosteus), see Lepisosteus oculatus
- oculellus Walker & Rosenblatt, 1988 (Porichthys)
- oculellus Munroe, 1991 (Symphurus)
- oculeum Chapman, 1939 (Myctophum), see Protomyctophum thompsoni
- oculeum Garman, 1899 (Myctophum), see Triphoturus mexicanus
- oculeus Cressey, 1981 (Synodus)
- oculeus Isbrìcker, 1980 (Cochliodon)
- Oculeus Commerson in Lacep¨de, 1803 (Megalopidae), see Megalops
- oculeus Fowler, 1943 (Panaque), see Cochliodon oculeus
- oculeus Richardson, 1846 (Myliobates), see Aetomylaeus milvus
- oculocirris Amaoka, 1969 (Pseudorhombus)
- ?oculocirris Jordan, 1897 (Emblemaria)
- oculocoeruleus Fourmanoir, 1966 (Ctenochaetus), see Ctenochaetus binotatus
- oculofasciatus Girard, 1858 (Nautichthys)
- oculofasciatus Girard, 1858 (Blepsias), see Nautichthys oculofasciatus
- oculofrenum Gilbert, 1968 (Porichthys)
- oculolineatus Wu, 1979 (Gobiodon)
- oculomaculatus Herre, 1935 (Gnathodentex), see Gnathodentex aureolineatus
- oculomirus (Oxyurichthys)
- oculo-mirus Herre, 1927 (Oxyurichthys), see Oxyurichthys oculomirus
- Oculospinus Koefoed, 1927 (Bythitinae), see Cataetyx
- oculum Eigenmann & Kennedy, 1903 (Colossoma), see Colossoma macropomum
- oculus Springer, 1971 (Ecsenius)
- oculus Hardy, 1989 (Bovichtus)
- oculus Fricke & Roberts, 1994 (Apopterygion)
- oculus De Bruin, Russell & Bogusch, 1995 (Heteromycteris)
- oculus Alcock, 1889 (Solea), see Heteromycteris oculus
- oculus Cope, 1872 (Myletes), see Colossoma macropomum
- oculusperdix (Labrus)
- oculus-perdix Rafinesque, 1810 (Labrus), see Labrus oculusperdix
- Ocyanthias Jordan & Evermann, 1896 (Anthiinae), see Holanthias
- Ocycrius Jordan & Hubbs, 1925 (Centrolophidae), see Hyperoglyphe
- Ocynectes Jordan & Starks, 1904 (Cottidae)
- Ocyurus Gill, 1862 (Lutjaninae)
- ocyurus (Plectorhinchus)
- ocyurus Jordan & Fesler, 1893 (Sectator)
- ocyurus Robins & Ray, 1986 (Centropristis)
- ?ocyurus Jordan & Seale, 1907 (Rhinogobius)
- ?ocyurus Jordan & Evermann, 1902 (Plectorhynchus), see Plectorhinchus ocyurus
- ocyurus Jordan & Evermann, 1887 (Serranus), see Centropristis ocyurus
- ocyurus Jordan & Gilbert, 1882 (Pimelepterus), see Sectator ocyurus
- Odacidae (Perciformes)
- odai Ishiyama, 1958 (Rhinoraja)
- odaulax (Raja)
- Odax Valenciennes in Cuvier & Valenciennes, 1840 (Odacidae)
- Odax Commerson in Lacep¨de, 1801 (Scarinae), see Scarus
- Odaxothrissa Boulenger, 1899 (Clupeidae)
- oddi (Sulak, 1977) (Bathypterois)
- oddi Sulak, 1977 (Bathycygnus), see Bathypterois oddi
- odessicus Vasilyeva et al., 1993 ( Neogobiuseurycephalus)
- odiosus (Gymnothorax)
- Oditichthys Huber, 1999 (Rivulinae), see Rivulus
- odo« Pellegrin, 1926 (Sarcodaces odoe var. ), see Hepsetus odoe
- odoe Bloch, 1794 (Hepsetus)
- odoe Bloch, 1794 (Salmo), see Hepsetus odoe
- odoe Gìnther, 1864 (Sarcodaces), see Hepsetus odoe
- odon (Odax)
- Odondebuenia de Buen, 1930 (Gobiidae)
- ?odonoghuei Bajkov, 1929 (Coregonus)
- Odontanthias Bleeker, 1873 (Anthiinae)
- Odontaspididae (Lamniformes)
- Odontaspidinae (Carcharhinidae)
- Odontaspis Agassiz, 1838 (Odontaspidinae)
- odontaspis Fowler, 1908 (Eulamia), see Negaprion acutidens
- Odonteleotris Gill, 1863 (Eleotridae)
- Odontengraulis Whitehead, Boeseman & Wheeler (ex Bleeker), 1966 (Engraulidae), see Lycothrissa
- Odontesthes Evermann & Kendall, 1906 (Atherinopsinae)
- Odontobutidae (Perciformes)
- Odontobutis Bleeker, 1874 (Odontobutidae)
- Odontocharacidium Buckup, 1993 (Characidiinae)
- odontocheilus (Tyttocharax), see Tyttocharax madeirae
- odontocheilus Miranda-Ribeiro, 1939 (Microcaelurus), see Tyttocharax madeirae
- Odontoclinus Reid, 1935 (Labrisomidae), see Labrisomus
- Odontogadus Gill, 1863 (Gadidae), see Merlangius
- Odontoglyphis Fowler, 1904 (Nemipteridae), see Nemipterus
- Odontognathus Lacep¨de, 1800 (Clupeidae)
- Odontogobius Bleeker, 1874 (Gobiidae), see Amblygobius
- Odontolabrax (Serranidae)
- Odontolepis Fischer von Waldheim, 1813 (Symphurinae), see Symphurus
- Odontolimia Rivas, 1980 (Poeciliinae), see Poecilia
- Odontoliparis (Liparinae)
- Odontomacrurus Norman, 1939 (Macrourinae)
- Odontonema Weber, 1913 (Chiasmodontidae), see Kali
- Odontopholis Page, 1974 (Etheostomatinae), see Percina
- Odontopsis van Hasselt, 1823 (Aplocheilinae), see Aplocheilus
- Odontopyxis Lockington, 1880 (Agonidae)
- Odontorhamphus Weed, 1933 (Hemiramphidae), see Hyporhamphus
- Odontoscion Gill, 1862 (Sciaenidae)
- Odontostilbe Cope, 1870 (Cheirodontinae)
- Odontostoechus Gomes, 1947 (Cheirodontinae), see Othonocheirodus
- Odontostomias Norman, 1930 (Melanostomiinae)
- Odontostomops Fowler, 1934 (Evermannellidae)
- Odontostomus Cocco, 1838 (Evermannellidae), see Evermannella
- odontostomus Fowler, 1934 (Uranoconger), see Bathycongrus roosendaali
- odontotumulus Retzer & Page, 1997 (Farlowella)
- Odonus Gistel, 1848 (Balistidae)
- odynea Burgess, 1989 ( Pimelodellachagresi)
- Oedalechilus Fowler, 1903 (Mugilidae)
- oedema (Chlorurus)
- oedema Kishimioto, 1984 (Scarus), see Chlorurus oedema
- oedema Schultz, 1958 (Ypsiscarus), see Chlorurus oedema
- oedema Snyder, 1909 (Callyodon), see Chlorurus oedema
- Oedemognathus Myers, 1936 (Gymnotidae)
- oedipus (Kottelat, 1988) (Schistura)
- oedipus Kottelat, 1988 (Nemacheilus), see Schistura oedipus
- oedipus Kottelat, 1988 (Noemacheilus), see Schistura oedipus
- oedogenys Trewavas, 1977 (Austronibea)
- oelemariensis Kullander & Nijssen, 1989 (Guianacara)
- oelemariensis Kullander & Nijssen, 1989 (Oelemaria), see Guianacara oelemariensis
- oelemariensis Nijssen, 1970 (Corydoras), see Corydoras baderi
- oenas Vari, 1992 (Cyphocharax)
- oenolaemus Kullander, 1987 (Bujurquina)
- oeresundica Nilsson, 1832 (Clupea harengus oceanica subf. ), see Clupea harengus
- oernensis Lænnberg, 1932 (Cottus quadricornis), see Triglopsis quadricornis
- oerstedii Allen & Robertson, 1994 (Selene), see Selene orstedii
- oeseri Wildekamp et al., 1986 (Aphyosemion)
- oeseri Radda, 1977 (Mesoaphyosemion), see Aphyosemion oeseri
- oeseri Schmidt (ex Ahl), 1928 (Panchax), see Aphyosemion oeseri
- oetik Bleeker, 1846 (Arius)
- offucius Winterbottom & Emery, 1981 (Trimmatom)
- ogac Richardson, 1836 (Gadus)
- ogasawarensis Yanagisawa, 1978 (Amblyeleotris)
- ogat Kroyer, 1847 (Gadus), see Gadus ogac
- Ogcocephalidae (Lophiiformes)
- Ogcocephalus Fischer von Waldheim, 1813 (Ogcocephalidae)
- Ogilamia Whitley, 1939 (Carcharhininae), see Carcharhinus
- Ogilbia Jordan & Evermann in Evermann & Kendell, 1898 (Brosmophycinae)
- ogilbii Sykes, 1839 (Rohtee)
- ogilbyi Paxton et al., 1989 (Atherinomorus)
- ogilbyi Weber, 1910 (Melanotaenia)
- ogilbyi Norman, 1926 (Cynoglossus)
- ogilbyi McCulloch, 1914 (Hoplichthys)
- ogilbyi Paxton et al., 1989 (Hydrolagus)
- ?ogilbyi Fowler, 1918 (Mugil)
- ogilbyi Fowler, 1907 (Muraenichthys), see Muraenichthys breviceps
- ogilbyi Regan, 1909 (Orectolobus), see Eucrossorhinus dasypogon
- ogilbyi Waite, 1898 (Chimaera), see Hydrolagus ogilbyi
- ogilbyi Whitley, 1930 (Pranesus), see Atherinomorus ogilbyi
- ogilbyi Whitley, 1934 (Nebrodes concolor), see Ginglymostoma ferrugineum
- ogilbyi Whitley, 1939 (Raja), see Raja whitleyi
- ogilbyi Whitley, 1939 (Spiniraja), see Raja whitleyi
- ogilbyi Whitley, 1951 (Scortum), see Scortum hillii
- Ogilbyina Fowler, 1931 (Pseudochrominae)
- ogilviei G©ry, 1977 (Roestes)
- ogilviei Alfred, 1967 (Homaloptera)
- ogilviei Fowler, 1914 (Ageneiosus)
- ogilviei (Opsodoras)
- ogilviei Fowler, 1914 (Xiphocharax), see Roestes ogilviei
- ogiwara Nichols, 1913 (Sciaena), see Larimichthys polyactis
- oglina Fowler, 1938 (Lepidotrigla)
- oglina Lesueur, 1818 (Megalops), see Opisthonema oglinum
- oglinum Lee et al., 1980 (Opisthonema)
- oglinus (Scorpaena)
- oglinus Smith, 1947 (Kantapus), see Scorpaena oglinus
- Ognichodes Swainson, 1839 (Gobionellinae), see Gobioides
- ogoense Wildekamp et al., 1986 (Aphyosemion)
- ogoense Radda, 1977 (Mesoaphyosemion), see Aphyosemion ogoense
- ogoensis Pellegrin, 1911 (Nannocharax)
- ogoensis Pellegrin, 1930 (Haplochilus lujae var. ), see Aphyosemion ogoense
- ogooensis Risch, 1986 (Chrysichthys)
- ogooensis Pellegrin, 1900 (Gephyroglanis), see Chrysichthys ogooensis
- ogos Seale, 1910 (Callyodon), see Scarus javanicus
- ogowensis Gìnther, 1896 (Chromis), see Tilapia tholloni
- ogowensis Gìnther, 1899 (Chrysichthys), see Chrysichthys nigrodigitatus
- oguensis Sauvage, 1879 (Malapterurus electricus var. ), see Malapterurus electricus
- ogunensis Boulenger, 1910 (Labeo)
- ?ogura Kishinouye, 1911 (Clupea)
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