Fish plays an important role in human nutrition health. It is a valuable source of protein, minerals, vitamins like A, B, D and fatty acids. Singarah (Mystus sp.) belongs to group catfish is found available in the river Brahmaputra and its tributaries is a very popular having highly demand among the consumers. There are many methods available nowadays for the preservation of fishes. There are also some local methods, fully scientific use by the indigenous people of N.E. of India. Burning of

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... in low fire is such a local process of preservation. In the study, freshwater catfish, of genus Mystus like Mystustengara, Mystus vittatus, Mystusca vasius are burnt and observation was done on proximate composition and microbial load from fresh and burnt samples.