An experiment was conducted for 90 days in cemented cisterns to evaluate the effect of three dietary protein levels on the growth and body composition of Cirrhinus mrigala. Three different iso-caloric feeds containing 30%, 35% and 40% dietary protein levels were prepared from indigenous feed ingredients and were fed to Cirrhinus mrigala at the rate of 8% of total body weight. The overall growth of Cirrhinus mrigala fed with different levels of dietary protein was found to increase with the increase of dietary protein levels in feed C followed by feed B and significantly lowest in feed C. The gonadosomatic index (GSI) values of both male and female were higher in Feed-C (40% protein) compared to the Feed-A (30%) and Feed-B (35%). There was significant differences (P<0.05) between the gonadosomatic index values of Cirrhinus mrigala fed on different dietary protein levels. Statistical analysis showed that the feed at a level of 40% protein was significantly different from other feeds and most effective in changing the growth and maturity of Cirrhinus mrigala. Key Words: Formulated Feed, Maturity, Cirrhinus Mrigala, Body Composition.