Tilapia is the common name broadly applied to a group of cichlid fishes native to Africa, the Mediterranean, and the Middle East. Tilapia are some of the oldest cultured fishes, as depicted in line drawings found in Egyptian tombs that date back to 2000 BC. This group consists of three economically important genera, which are taxonomically distinguished according to their reproductive behaviors: Tilapia, Oreochromis, and Sarotherodon, all are commonly known as “tilapia.” Tilapia are biparental caring-substrate spawners; Oreochromis are generally maternal mouth brooders; and Sarotherodon are generally paternal or biparental mouth brooders. Currently, Nile tilapia (Oreochromis niloticus; fig. 1) and various hybrids are the most commonly produced tilapine species (Green, 2006). Other less commonly cultured species include Blue tilapia (O. aureus), Mozambique tilapia (O. mossambicus), Zanzibar tilapia (O. urolepis hornorum), and red tilapia (T. rendalli and T. zilli).