Results obtained revealed that Florida Red Tilapia attains the ripe stage of maturity at all lipid concentrations in the three different salinities with best contributions at 6 % lipid level for both sexes. The hepato-somatic index increased with increasing salinity for females and males. Results also revealed that females cultured in brackish water (17.8%o) attain the maximum hepatosomatic-index (4.24) at 12% lipid level, while for males the maximum index (3.81) is observed at 9% dietary lipid in seawater (36.2%o). The gonado-somatic index is higher for both sexes reaches the maximum values
at all lipid cnocentrations in the brackish water. Results also, showed that optimum condition factor for females (1.32) is found in fresh water at 3% lipid level, while for males tile maxinium one (1.32) is observed at 3% energy level in brackish water. The average condition factors for females and males (1.7 & 1.6 respectively) in seawater are higher than that in fresh and brackish water. Results indicated that in the three different salinities, the sex ratio reaches
maximum values at 3% energy levels. Also, it is found that in fresh water the sex ratio is significant at (Psexes Therefore, it is recommended to culture this species in the brackish water at 6 % dietary level of lipid.