Abstract For the proper growth of fish, it is necessary to feed fish with a and balanced diet. A study was conducted find out effect different protein-based diets on fingerlings Tor putitora (mahseer). dietary protein levels 35%, 40%, 45%, 50% were prepared. The weight gain, standard rate (SGR), food conversion ratio (FCR), percent efficiency (FCE), (PER) studied. An increase observed in an con...