length-weight and length-length relationships and condition factor of six cyprinid fish species of zarrineh river (urmia lake basin, iran)

this research was conducted to study the length-weight and length-length relationships and condition factor of six cyprinid fish species viz. alburnus atropatena , barbus lacerta , capoeta capoeta , carrasius gibelio , romanogobio macropterus and pseudorasbora parva from zarrineh river (urmia lake basin, iran). a total of 188 specimens ranging from 2.9 to 21.4cm in total length and 0.22 to 176g in total weight were collected. based on the results, the values of b varied between 2.59 for c. capoeta , to 3.26 for a. atropatenae . all length-weight relationships were significant (p<0.001), with r 2 greater than 0.88. the condition factor were found to be between 0.075±0.244 for c. capoeta to 1.021±0.143 for c. gibelio . the length-length relations between total length, fork length, and standard length for the six fish species were highly significant ( r 2 >0.98). all linear regressions were highly significant (p<0.05). the result of this study may be useful for biologists and fishery managers.