Fish That Start with O

Explore 16 verified fish starting with O, from Oarfish, Orange roughy, Opah, Oscar fish, Ocean sunfish, Otocinclus and Ocellaris clownfish. Select any entry from these freshwater and saltwater fish species below to view definitions and photos, or browse our main fish directory.

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Starts with OA1 words
oarfish
Starts with OC3 words
ocean sunfish
ocellaris clownfish
oceanic whitetip shark
Starts with OD1 words
odessa barb
Starts with OI1 words
oilfish
Starts with OP2 words
opah
opaleye
Starts with OR3 words
orange roughy
oranda goldfish
ornate bichir
Starts with OS4 words
oscar
oscar fish
osteoglossum
osmerid
Starts with OT1 words
otocinclus
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