Length-weight, length-length and empirical standard weight equations for Capoeta baliki, Capoeta sieboldii and Chondrostoma angorense, three endemic cyprinid species of northwestern Anatolia

Abstract

In this study, length and weight data for three endemic fish species of North-western Anatolia (Capoeta baliki, Capoeta sieboldi and Chondrostoma angorense) were collected throughout their distribution ranges and used to estimate length-length, total length (TL) – weight and empirical standard weight (Ws) equations. The obtained Ws equations were: log10Ws = -6.743 + 4.768 log10 TL - 0.437 log10 TL2 (TL range: 7-28 cm) for C. baliki; log10Ws= - 5.966 + 3.833 log10TL - 0.181 log10 TL2 (TL range: 7-36 cm) for C. sieboldii; log10Ws= - 10.017 + 7.402 log10TL - 0.971 log10TL2 (TL-range: 7-24 cm) for C. angorense. For C. angorense, these data represents the first reference on length-weight for the species. In addition, a new maximum length was reported for C. baliki.