Tracing its roots to the Nile River, "Tilapia" is actually a group of species within the tilapiine cichlid genus. Tilapia has been farm raised for decades and is cultivated in warm waters across the globe. Sometimes called "St. Peter's Fish", the tilapia is, according to legend, the one fish that Jesus of Nazareth used to feed the masses. Whole tilapia normally range from one to two pounds in size.