Length-Weight relationships of (9) fish species from Derbendikhan Reservoir- Kurdistan region, Iraq.

Abstract

Length-weight relationships were estimated for 9 fish species represented by 1022 individuals , Carassius auratus , Cyprinus carpio , Capoeta damascina , Barbus esocinus , Barbus grypus , Barbus xanthopterus, Heteropneustes fossilis, Aspius vorax, Silurus triostegus caught from the Derbendikhan Reservoir (South east Sulaimani City, Kurdistan region, Iraq) located on 35° 6' 35" N, 45° 41' 20" E.Samples collected from January to December, 2009 . The formula W = aL^b was applied to each individual fish and the individual value a were determined. r2 value ranged from 0.65 in Silurus triostegus to 0.99 in Capoeta damascina. The value of b=3 for all species means that the growth was isometric