messing about with creative mode, and spawned a number of aquatic species in the lake at my village. They seem to have all gone away, salmon, squid, cod, and I even threw in a handfull of dolphin for the heck of it. Turtles, they stayed. The lake has no outlet, so they didnt escape. Its not a huge lake, so I can search all of it. Not a fish to be had, only turtles.
ok, so can I have fish, puffers, turtles, and dolphin in the same lake? (I did plug a hole in it that could have been sucking fish out) but even with no squid fish seem to be going away. Dolphins dont last long at all.