Length Weight Relationship of Four Commercially Important Marine Fishes of Northern Bay of Bengal, West Bengal, India

Abstract

Length-weight relationship of four commercially important marine fish species of four genus from four different families were estimated between July 2010 and July 2011 at three different fish landing centers of West Bengal. A total of 1971 individual fishes of four species were measured. Length-weight relationship was established by the formulae: W=aL b . The ‘b’ values and ‘r 2’ values of length-weight relationship of Tenualosa ilisha, Pampus argenteus, Scomberomorus guttatus and Osteogeneiosus militaris were observed to be 3.109, 2.841, 2.894, 2.945 and 0.989, 0.987, 0.991, 0.992 respectively. The condition factor of all these four species were 1.141 ± 0.004 in T. ilisha, 0.649 ± 0.003 in S. guttatus, 1.623 ± 0.008 in P. argenteus and 0.941 ± 0.004 in O. militaris. There was a significant positive correlation between length and weight which indicates that all the four species maintain their shape throughout their life.