Nandus nandus (1822) is a preferred fish in Tripura. Presently its population is declining rapidly and it is now considered as an endangered fish species. So keeping the importance of this species in view, a study has been carried out to unfold its proximate composition such as moisture, protein, carbohydrate, fat and ash and muscle pH. During bioenergetics study it was observed that the fish feeds more in summer season. Microbiology study of fish showed that the fish is in acceptable condition.
Keywords Nandus nandus, Proximate composition, bioenergitics, microbial profile.