nase
needlefish
neon tetra
nibbler
North American darter
North American freshwater catfish
northern anchovy
northern clingfish
northern lampfish
northern pearleye
northern pike
northern sea robin
northern squawfish
northern Stargazer
Norwegian Atlantic salmon
nurse shark
nurseryfish
oarfish
ocean perch
ocean sunfish
oceanic whitetip shark
oilfish

oldwife
olive flounder
opah
opaleye
orange roughy
orangespine unicorn fish
orangestriped triggerfish
orbicular batfish
orbicular velvetfish
Oregon chub
oreo
Oriental loach
Owens pupfish
Pacific albacore
Pacific argentine
Pacific cod
Pacific hake
Pacific herring
Pacific lamprey
Pacific salmon
Pacific saury
Pacific trout

pacus
paddlefish
paperbone
paradise fish
parasitic catfish
parrotfish
peacock flounder
peamouth
pearl danio
pearl perch
pearleye
pearlfish
pejerrey
peladillo
pelagic cod
pelican eel
pelican gulper
pencil catfish
pencilfish
perch
Peter's elephantnose fish
pickerel

pigfish
pike
pike characid
pike conger
pike eel
pikeblenny
pikehead
pikeperch
pilchard
pilot fish
pineconefish
pink salmon
píntano
pipefish
piranha
pirarucu
pirate perch
plaice
platy
platyfish
pleco
plunderfish