Study area: Kangsabati, a man made reservoir has been set up during the year 1965-1966 on the river of Kansai and Kumari at Mukutmanipur, West Bengal, India. Geographically it is situated in between 22° 55'16.53" N - 23°2' 30.41"N latitude and 86° 37' 55.30" E - 86° 47' 23.35" E longitude. Recently this reservoir is used for various purposes like irrigation, drinking water supply, pisciculture etc. The fishery department, Government of West Bengal performs fisheries activity every year. As a result many poor people residing at villages surrounding the reservoir are benefited by catching and selling fishes in local markets.