Abstract:
Morphometric, meristic and molecular (COI) characters of Oxynoemacheilus kosswigi and O. seyhanensis from the
Kizilirmak and Seyhan basin, respectively, examined to understand their taxonomic status, since there was no comparison
done with O. seyhanensis when describing O. kosswigi. Based on the examined topotype materials, the character of
O. kosswigi is largely overlapped or identical with those of O. seyhanensis. Since no character states were found to
distinguish these species, we consider O. kosswigi a junior synonym of O. seyhanensis.