I have heard they do but I haven't seen that. They are seperated before hatching. About every ten days the adults are checked and if they have eggs in their mouth the eggs are flushed out of their mouths into the smaller aquarium whey they will hatch with out any other fish in there. The adult goes back outside to rebreed.
Fry are moved to the larger aquarium when the next group comes. And that starts the game of musical chairs until I get my growout pond built.
