Abstract Ninety days study was conducted in hapas installed earthen ponds. Fish of an average initial weight (220g) were evenly distributed triplicate groups within fifteen hapas. Five experimental diets labeled as T1 (25% CP and NRC recommended amino acid level) control diet, T2 (with 2% low protein 5% supplementation), T3 10% T4 4% supplementation) T5 20% prepared. fed with @3% their body twi...