International Science Community Association International Research Journal of Biological Sciences 2278-3202 7 5 2018 05 10 Studies on length-weight relationship of fish Puntius sophore (Hamilton) from the river Ghargharia at Cooch Behar, West Bengal, India 7 12 EN Akatah Hilda Abiola 1 Department of Biological Sciences, Faculty of Natural and Applied Sciences, Anchor University, Lagos, Nigeria Omonigho Solomon 2 Department of Microbiology, Faculty of Life Sciences, University of Benin, Benin City, Nigeria Ibrahim Azeez God\'s Gift 3 Department of Biological Sciences, Faculty of Natural and Applied Sciences, Anchor University, Lagos, Nigeria Seyinde Doris Onolenmen 4 Department of Chemical Sciences, Faculty of Natural and Applied Sciences, Anchor University, Lagos, Nigeria Pal Supratim 1 Department of Zoology, University of Gour Banga, Mokdumpur, Malda, West Bengal-732103, India Debnath Sukanta 2 Department of Zoology, Raiganj University, College Para, Raiganj, Uttar Dinajpur, West Bengal-733134, India Chakraborty Kaushik 3 Department of Zoology, University of Gour Banga, Mokdumpur, Malda, West Bengal-732103, India > Research Paper 2018 2 9 2018 05 10 A true relationship exists between the length and weight of an animal. Generally the growth pattern follows the cube laws in fishes. Such relationship will be valid when the fish growth is isometric. The experimental value must be exactly 3 in such cases. This value may depart from the ideal value due to environmental conditions or condition of fish in reality. This relationship is expressed by the equation “W = a Lb”. Present study attempts to develop a comprehensive length-weight relationship of Puntius sophore collected from river Ghargharia at Cooch Behar in West Bengal. In this study, a total of 25 fish specimen comprises of Puntius sophore ranged from 4.5 cm to 8.2 cm in length and 1.11 gm to 8.14 gm in weight were studied for the length-weight relationship. The entire length-weight data were analysed by least square method. The corresponding parabolic representation is W = 0.007524L3.3204. The equilibrium constant “b” is found to be 3.3204. The equilibrium constant does not obey the cube law because it deviates from 3. It indicates the environment of Ghargharia River was found good for healthy development of Puntius sophore. Copyright@ International Science Community Association