The length-weight relationships of 1650 Rastrelliger kanagurta (Cuvier, 1817) including 860 female and 790 male
collected from July 2009 to June 2012 from the commercial landings at Karachi Fish Harbour West Wharf are
presented in this study. The mean value of TL for male was 228 mm and female was 231 mm and mean weight range
for male was 147g and female was 156 g it means that females are heavier than males. The regression showed highly
significant (P < 0.01) values coefficient of correlation (r
2
) ranges from 0.876 (female) and 0.795 (male). The mean
regression value of b was 2.711, 2.922 and 2.838 for male, female and combined sexes r
