Oreochromis niloticus (surface-feeding omnivore) belong to the family Cichlidae; they are the most popular fish for culture in Nigeria. They grow fast, mature quickly; they breed easily, without inducement. They are widely distributed and they are well accepted by Nigerian. Apart from their special interest for fish biologist and taxonomists, tilapia contribute significantly to African inland water fisheries and are very good species for aquaculture thus this study was carried out (Huisman and Richter 1987; Haylor 1993, Fagbenro et al., 1993).