Study on length-weight relationships and condition factor of Capoeta trutta from Kangir and Seimare Rivers, Western Iran

Abstract

Length-weight relationships and condition factor were calculated for 62 fish specimens from populations of Capoeta trutta from Kangir River (42 specimens) and Seimare River (20 specimens) in Iran. In the present study, total length of fish ranged from 60.3 to 210.3 mm and weight ranged from 3.52 to 93.52 g. The all linear regression was statistically significant with all r 2 ≥ 0.94. The LWR shows the obtained b values for Kangir and Seimare populations were 2.69 and 2.85 respectively, which indicated a negative allometric growth for two populations. Also, the mean values of condition factor (K) were calculated 1.06 for Kangir River and 1.17 for Seimare River. The findings of this study are useful for biologist and fisheries managers.