The study was conducted to determine fry production and the survival rate of fry in different sex ratios of Tilapia rendalli reared in hapas. The fish were stocked at 3 fish /m 3 and was replicated three times for each sex ratio of 1♂:1♀ , 1♂:3♀ and 1♂:5♀(male: female).The experiment was conducted for 90 days. Data was analyzed in SPSS (16) where one way ANOVA was performed. The results showed that number of fry produced at different sex ratios were significantly different(P<0.05), with sex ratio of 1:5 producing a highest number of fry (422.80±1.19) as compared to the other treatments. This study has also shown that, a difference in sex ratio may also affect the survival rate of the fry, this may be due to number of fry produced to a specific sex ratio, in this case the low number of fry produced the higher the survival rate.