Okay so here’s my thinking... everybody knows that Convict cichlids breed like crazy if you just put a male and a female together, but who’s to say that only one species of tropical fish are this way? Bluegill and green sunfish are in every pond from Florida to Ontario, which means they must breed readily. They breed all summer long as long as the temperature is warm enough. Do you think if I put a male and female bluegill together in a tank and raised the temperature to 70-75 degrees, they would spawn? Or might green sunfish be easier since they seem to be able to spawn at a very small size and in shallower water?