Length–weight and length–length relationships for three species of Squalius (Cyprinidae; Leuciscinae) from the Caspian Sea, Namak and Tigris basins of Iran

Length‐weight and length‐length relationships were estimated for three species of the genus Squalius . These fish were sampled from the Caspian Sea as well as the Namak and Tigris basins of Iran. Sampling took place between July 2009 and August 2010 using a seine net (15 m long, 2 m width and 5 mm mesh size). The values of the b parameter in the length‐weight relationship equations were determined as 3.37 for S. turcicus , 3.25 for S. namak and 3.14 for S. berak ( b  > 3).