جميع الأسماك

Nuakata shrimpgoby

Tomiyamichthys stuarti

Not Evaluated saltwater

Numa-chichibu

Tridentiger brevispinis

Not Evaluated both

Oesers Prachtkärpfling

Fundulopanchax oeseri

Not Evaluated freshwater

Ohio lamprey

Ichthyomyzon bdellium

Not Evaluated freshwater

Ojiro-hadaka

Idiolychnus urolampus

Not Evaluated saltwater

Odontostilbe parecis

Not Evaluated freshwater

Odontostilbe pulchra

Not Evaluated freshwater

Odontostilbe stenodon

Not Evaluated freshwater

Odontostilbe weitzmani

Not Evaluated freshwater

Odontostoechus lethostigmus

Not Evaluated freshwater

Ogilbyina salvati

Not Evaluated saltwater

Ogasawara sweeper

Pempheris familia

Not Evaluated saltwater

Offshore rockfish

Pontinus kuhlii

Not Evaluated saltwater

Ohrid trout

Salmo letnica

Not Evaluated freshwater

Pantano cichlid

Cincelichthys pearsei

Not Evaluated brackish

Oman moray

Gymnothorax megaspilus

Not Evaluated saltwater

Ô-mimizuhaze

Luciogobius grandis

Not Evaluated saltwater

Olyra collettii

Not Evaluated freshwater

Oman blenny

Oman ypsilon

Not Evaluated saltwater

Omobranchus hikkaduwensis

Not Evaluated saltwater

Ompok binotatus

Not Evaluated freshwater

Ompok brevirictus

Not Evaluated freshwater

Ompok rhadinurus

Not Evaluated freshwater

Ompok supernus

Not Evaluated freshwater

Ompok urbaini

Not Evaluated freshwater

Oman sweeper

Pempheris kuriamuria

Not Evaluated saltwater

Oman jawfish

Stalix omanensis

Not Evaluated saltwater

Adorned fairy-warsse

Cirrhilabrus adornatus

Not Evaluated saltwater

Opsarius cocsa

Not Evaluated freshwater

Opsarius howesi

Not Evaluated freshwater

Opsarius kanaensis

Not Evaluated freshwater

Opsarius maculatus

Not Evaluated freshwater

Opsarius malabaricus

Not Evaluated freshwater

Opistognathus walkeri

Not Evaluated saltwater

Opsariichthys bea

Not Evaluated freshwater

Opsariichthys dienbienensis

Not Evaluated freshwater