oar fish (UK and USA)
oarfish (UK and USA)
obtuse barracuda (UK and USA)
ocean sunfish (UK and USA)
Oceanic eels (UK and USA)
Oceanic whitetip shark (UK and USA)
oilfish (UK and USA)
opah (UK and USA)
Oreos (UK and USA)
ornate wrasse (UK and USA)
Ox-eye scad (UK and USA)
oblade (France and Belgium)
odontaspide féroce (France and Belgium)
omble chevalier (France and Belgium)
ombrine (France and Belgium)
ombrine bronze (France and Belgium)
ombrine commune (France and Belgium)
ombrine côtière (France and Belgium)
ombrine fusca (France and Belgium)
orphie (France and Belgium)
orphie carene (France and Belgium)
Orphies (France and Belgium)
otolithe nanka (France and Belgium)
otolithe sénégalais (France and Belgium)
oxyrhine (France and Belgium)
oblada (Spain)
Ostseeschnepel (Germany)
occhialone (Italy)
occhiata (Italy)
ombrina (Italy)
orata (Italy)
omul (Russia)
Osetr (Russia)
ostronos (Russia)
ostronosy triglops (Russia)
obrvan (former Yugoslavia)
orfan (former Yugoslavia)
oslic (former Yugoslavia)
ovcica (former Yugoslavia)
ovrata (former Yugoslavia)
ombervis (Netherlands and Belgium)
oxsimpa (Sweden)
olho branço (Portugal)
olho-de-vidro (Portugal)
olhuda (Portugal)
ochias (Greece)
orfoz (Turkey)
orfoz (Turkey)
orkinos (Turkey)
okonus (Israel)
okonus adom (Israel)
okonus matzui (Israel)