Length-Weight Relationship and Condition Factor of Puntius sophore (Hamilton, 1822) Collected from Kolkata and Sub Urban Fish Markets

摘要

Puntius sophore is an important species due to its high nutritive status, delicacy and market demand both in fresh and dried conditions. Length-weight relationships are important in fisheries science, notably to raise length-frequency samples to totalcatch, or to estimate biomass from underwater length observations. It is reported that P. sophore is declining rapidly due to heavy fishing pressure from the Indian waters, it is categorized as lower risk near threatened. In the present study length-weight relationship and condition factor of P. sophore (Hamilton) were estimated from 483 individuals collected from Kolkata and sub-urban fish markets during February 2012 to February 2013 to assess the two most biological parameters of the species. The total length ranged from 4.90 to 11.10 cm and the total body weight ranged from 1.37 to 21.11 g. The scatter diagram showed the linear relationship in between the log length and log weight of the fish. The relationship of logarithm values of length and weight was found positive andhighly significant justifying a strong relationship between L-W of P. sophore (r=0.934). The functional form of relationship between L-W of the species is established as Log W= - 2.130 + 3.242 Log L. The fitted equation is a good fit as can seen from thecoefficient of determination value (R2 = 0.871). The mean condition factor of the fish was found to 1.10 indicating good condition of the fish.