What general words refer to animals that live in the water?

fish, water animal, sea creature

What species of saltwater fish are there?

anchovy, barracuda, bass, blackfish, bonefish, bream, carp, cod, codfish, crappie, darter, flatfish, flounder, gar, garfish, garpike, goldfish, grouper, guppy, halibut, herring, lungfish, mackerel, marlin, pickerel, pike, piranha, pollack, pompano, sailfish, salmon, sardine, sea horse, shad, sole, spearfish, sturgeon, sucker, sunfish, swordfish, tarpon, tuna, turbot, whitefish, whiting, wrasse

What words describe where a fish lives?

freshwater, saltwater, pelagic, marine, aquatic