If you want to breed your own, go with Nile tilapia that have an improved body form (GIFT). If you grow them in cages that deny the females a flat bottom, they can't spawn. This allows the females to grow as large as the males. Periodically, pull out the best shaped and fastest growing fish as brood stock.

Keeping two separate species to produce hybrids is beyond what most people can do. These are large fish when grown, over 15". Keeping enough viable colonies requires lots of room and is not for the casual breeder.