Right. If you're talking about PetSmart, Petco, or some other large chain store you're likely looking at mixed species AND breed. There is no one to talk to about the pedigree of the fish and you'll never know if they're a pure breed, and thus should never breed and distribute the offspring yourself. Better to find a trusted LFS or shop online if you're interested in breeding. If not, hybrids can be attractive sometimes and should make fine pets.