Actinopterygii

Pigfish

Orthopristis chrysoptera

Orthopristis hybrid

Orthopristis hybrid

Bronze-striped Grunt

Orthopristis reddingi

Corocoro Grunt

Orthopristis rubra

South American grunt

Orthopristis scapularis

Orthospinus franciscensis

Orthospinus franciscensis

Characidae

Tamandua Knifefish

Orthosternarchus tamandua

Apteronotidae

Japanese medaka

Oryzias latipes

Adrianichthyidae

Sarasins Buntingi

Oryzias sarasinorum

Adrianichthyidae

Montecristo Cichlid

Oscura heterospila

Cichlidae

Pacific Rainbow Smelt

Osmerus dentex

Osmeridae

European Smelt

Osmerus eperlanus

Osmeridae

Rainbow Smelt

Osmerus mordax

Osmeridae

Ossancora asterophysa

Ossancora asterophysa

Turushuqui

Ossancora eigenmanni

Ossancora fimbriata

Ossancora fimbriata

Doras

Ossancora punctata

Parrot Pacu

Ossubtus xinguense

Serrasalmidae

bigtailed snailfish

Osteodiscus cascadiae

Liparidae

Silver Arawana

Osteoglossum bicirrhosum

Osteoglossidae

Black Arawana

Osteoglossum ferreirai

Osteoglossidae

Kanda

Osteomugil engeli

Mugilidae

Robust Mullet

Osteomugil robustus

Mugilidae

Bigeye Soldierfish

Ostichthys trachypoma

Holocentridae

Broadstriped Cardinalfish

Ostorhinchus angustatus

Short-tooth Cardinal

Ostorhinchus apogonoides

Ring-tailed Cardinalfish

Ostorhinchus aureus

Blue-eye Cardinalfish

Ostorhinchus compressus

Cook's Cardinalfish

Ostorhinchus cookii

Yellow-striped Cardinalfish

Ostorhinchus cyanosoma

Fourline Cardinalfish

Ostorhinchus doederleini

Broadbanded Cardinalfish

Ostorhinchus fasciatus

Ostorhinchus leslie

Ostorhinchus leslie

Yellow Cardinalfish

Ostorhinchus luteus

Spotted Cardinalfish

Ostorhinchus maculiferus

Yelloweyed Cardinalfish

Ostorhinchus monospilus

Larval Cardinalfish

Ostorhinchus neotes

Blackstripe Cardinalfish

Ostorhinchus nigrofasciatus

Norfolk cardinalfish

Ostorhinchus norfolcensis

Sevenstriped Cardinalfish

Ostorhinchus novemfasciatus

Kin Cardinalfish

Ostorhinchus relativus

Orangespot Cardinalfish

Ostorhinchus rubrimacula

Ninestripe Cardinal

Ostorhinchus taeniophorus

Yellow Boxfish

Ostracion cubicum

Whitespotted Boxfish

Ostracion meleagris

lognosed boxfish

Ostracion nasus

Reticulate Boxfish

Ostracion solorense

Roughskin Boxfish

Ostracion trachys

Whitley's Boxfish

Ostracion whitleyi

Otocinclus affinis

Otocinclus affinis

Arnold's sucker catfish

Otocinclus arnoldi

Otocinclus bororo

Otocinclus bororo

Zebra Dwarf Sucker

Otocinclus cocama

Limpiavidrios

Otocinclus flexilis

Otocinclus hasemani

Otocinclus hasemani

Otocinclus hoppei

Otocinclus hoppei

carachamita

Otocinclus huaorani