Millions of human beings are suffering from hunger and malnutrition and fishes form a rich source of food and provide a window of opportunity to tide over the nutritional requirements of vast populace. The feeds are considered as the most need for farmers, therefore they should be effectively used. Lately, their use has been increased due to an effective balancing of meals and introduction of synthetic amino acids. Thus, this present study was aimed to study the efficacy of Richkin and Vanimin on the body length-weight and gonadal somatic index of the three fish species i.e.., Catla catla, Labeo rohita and Cirrhinus mrigala. Richmin than vanimin enhanced the body length, body weight and ovary weight of all the fish species and more increment of the three parameters were induced by Richmin fed fish species compared to vanimin fed ones. Catla catla showed greater increase of all the three parameters namely body length, body weight and ovary weight and was followed by Cirrhinus mrigala > Labeo rohita. Richmin than vanimin increased the gonadal somatic index of all three fishes selected for the study. Richmin was more effective in enhancing the gonadal somatic index of all fish species compared to the vanimin fed ones. The trend was more for Labeo rohita and was followed by Catla catla > Cirrhinus mrigala.