Capoeta erhaniis an endemic species to Southeast of Turkey. To date the information on biology of this species from inland waters of Turkey is very limited. The present study aims to provide the basic age and growth parameters ofC. erhani from the middle basin of the Seyhan River. In total, 255 individuals were collected seasonally between October 2013 and September 2014. The overall sex ratio was 3.47:1 M: F. The total length of the specimens ranged from 10.4 to 33.0 cm and the weight from 9.0 to 360.0 g. The ages of total examined fish ranged from 0 to 5 years. Maximum age was found to be 5 years for both sexes. Length-weight relationship was described as logW= -5.067 + 3.168 logTL (r2= 0.972). The von Bertalanffy growth parameters were: L∞= 32.51 cm; k= 0.400 year-1; t0=-0.930 year for the entire population. Munro’s phi prime index in males, females and both sexes was calculated as 6.00, 6.12 and 6.04.

Keywords:Capoeta erhani, Endemic species, Growth parameters, Fisheries