ybridization between four important fishes of titapia Oreochromis niloticus; 0. aureus; Taiwan red tilapia and Florida red tilapia were done to compare growth performance, survival rate and feed conversion ratio for F1 hybrids under two levels of water salinity (1.75 and I 5.0 g/L) and protein levels (30 and 40%) in the artificial diet. The present study demonstrates that 1) The hybrids of: O. niloticus males X Florida red tilapia females.
O. aureus males X O. niloticus females. O. aureus males X Florida red tilapia female.
Taiwan red tilapia males X O. niloticus females. Taiwan red tilapia males X Florida red tilapia females. were judged to be of high potential commercial value, because these hybrids showed increased growth rate and survival percentage and also used less feed to produce one unit of gain in body weight compared with their parents.
2) after successful adaptation, the juvenile of tilapia hybrids (O. niloticus) males with other three species females) gave better