Density control of Tilapia sp. population pouds by Lates niloticus (Nile perch)

Experiments in controlling Tilapia populations in ponds by using Lates as a predator have been carried cut in Kajansi Fish Farm, Kampala, since 1957. The Lates for these experiments were brought from Lake Albert. Failure to produce Lates fingerlings in any number at Kajansi brought the experiments to a standstill. The high turbidity of Kajansi's Ponds may be the explanation for the failure to breed the Lates. The only breeding which has taken place was a wild spawning which produced about 100 fingerlings. It has not been possible to artificially reproduce the conditions which brought about this spawning