The following is a directory of all sea fish in the Animal Crossing series.
Anchovy
Barred Knifejaw
Barreleye
Blowfish
Blue Marlin
Butterfly Fish
Clownfish
Coelacanth
Dab
Football Fish
Giant Trevally
Hammerhead Shark
Horse Mackerel
Jellyfish
Lobster
Mahi-Mahi
Moray Eel
Napoleonfish
Oarfish
Ocean Sunfish
Octopus
Olive Flounder
Puffer Fish
Ray
Red Snapper
Ribbon Eel
Saw Shark
Sea Bass
Sea Butterfly
Seahorse
Great White Shark
Squid
Suckerfish
Surgeonfish
Tuna
Whale Shark
Zebra Turkeyfish