Cecil what a distrubing thought! I guess what goes on the bedroom stays in the bedroom or spawning grounds in this case. As long as I don;t end up with torpedo shaped CC with a black stripe, a LMB mouth with whiskers and spines everything else will be just morths.
No worries; different spawning methods and DNA are too different.
Believe it or not, my response was serious although it sounded tongue in cheek. Among sunfish species that have similar spawning habits e.g. bluegill, redear, green sunfish, hybrids, etc., there is more of a likelyhood interbreeding if the water is turbid (can't tell each other apart) or spawning sites are limited.
To show you how much visibility matters, researchers have caused bluegills to interbreed with redears by cutting off the colored portion of the eartab on the redears.
