Empirical Standard Weight Equation for the Aegean Chub Squalius fellowesii , an Endemic Freshwater Fish Species of Western Anatolia, Turkey

Data on length and weight of Aegean chub Squalius fellowesii , an endemic species distributed in the Aegean drainages of Anatolia, Turkey, were used to calculate a standard weight ( W s ) equation by means of the empirical percentile (EmP) method. The resulting W s equation was log 10 W s = −3.801 + 1.783·log 10 TL + 0.329·(log 10 TL) 2 . Over the range of application (70–220 mm TL), the EmP W s equation was not biased by length, and the use of this equation is suggested as a way to calculate the relative weight ( W r ) of Aegean chub throughout the species’ distribution area. Received June 12, 2012; accepted July 27, 2012