Control of reproduction of Tilapia nilotica using cage culture

Experiments were conducted to control reproduction of Tilapia nilotica using cage culture compared with growth and reproduction in ponds. Three rearing densities (5, 15, and 45 fish per cage), and three kinds of aquatic plant (Hydrilla sp., Lemna sp., and Chara sp.) were used as feed. Results of the study showed that Tilapia reproduced in both cages and ponds; however, the intensity of reproduction was low. Growth rates of fish reared in cages were higher than those of fish reared in ponds. Lemna sp. as feed gave the best results in terms of growth rate and protein content of fish flesh. There was no interaction between feed and rearing density.