Schizothorax niger is a native fresh water snow trout of Kashmir which due to anthropogenic intervention is subjected to different pollution regimes besides pathological and stress conditions. The book by deliberating on histochemical and biochemical aspects of the snow trout, gives an insight into the energy demands of the fish in different seasons. The book is supposed to help cytologists understand cellular structure of testes, ovary and kidneys. Moreover the book will serve fishery biologists by providing them information about the fate of lipids, proteins and carbohydrates throughout the year.