Fisheries and Aquaculture Biotechnology in recent years has become an imperative interest to the global scientific fraternity as it may harvest rich dividends towards achieving the goal of producing cheap and best of animal protein. Poikilotherms (viz. fishes) in this context are excellent machinery to convert low value raw material into high value protein and lipid. This monograph portrays several aspects of a rare fish biology in four chapters, in terms of physiology and genetic diversity. The literature review in each chapter is extensive if not exhaustive. The work may be useful to overview the current status of a tropical fish species and explains several simple though significant study protocol that will not only aid readers to replicate the same with other fishes but may also hearten to promote conservation strategies for tropical biodiversity.