cows, dogs, cats, chickens, horses, and other domesticated animlas are not hybrids. they are the SAME species. all dogs are the same species. a bichon frize is the same species as a great dane. a shynx is the same species as a simese. a clydsdale is the same species as a quarter horse. they are all variations. humans are not hybrids either. we are all the SAME species, and you can go ahead and argue it, but its not going to change for a long time.
back on topic, if your fish hybridize, then keep like 2 or 3 like you were going to and then use the rest as feeders for your other fish. it would be so cool to have a fish that nobody around you has.