Our study was conducted to obtain the effect of Tribulus terrestris extract (TTE) on growth performance, feed utilization, fish body composition, some blood parameters, sex-ratio and sexual hormones of Nile tilapia larvae.Nile tilapia (Oreochromis niloticus) is fed dietary with TTE (0, 0.5, 1, 1.5, 2) g TTE/Kg diet and 17 α-methyl testosterone (17-α MT) hormone (60 mg 17-α MT/kg diet).The experime...