This study was conducted to determine the relationship between the length and weight (LWR) of 15 Oxynoemacheilusspecies i.e. Oxynoemacheilus bergianus, O. brandtii, O. chomanicus, O. euphraticus, O. elsae, O. frenatus, O. karunensis, O. kiabii,O. kurdistanicus, O. longipinnis, O. parvinae, O. persa, O. marunensis, O. zagrosensis, and O. zarzianus from Iranian inland waters.LWRs with high coefficients of determination were calculated for all species. The values of the slope parameter (b) ranged from 2.225in O. brandtii to 3.575 in O. euphraticus. Fulton’s condition factor (KF) ranged from 0.673 in O. persa to 1.407 in O. kiabili. Relativeconditions had a narrow distribution range of 0.988–1.009 with a mean of 1.001 ± 0.028. This study presents the first LWRs data forO. chomanicus, O. euphraticus, O. elsae, O. karunensis, O. kurdistanicus, O. longipinnis, O. parvinae, O. marunensis, and O. zarzianusfrom Iranian inland waters that can be used for future studies and fisheries stock managements.
