Iksookimia yongdokensis, a new cobitid fish (Pisces: Cobitidae) from Korea with a key to the species of Iksookimia

A new cobitid fish, Iksookimia yongdokensis, is described from rivers flowing to the southeastern coast of Korea. The species is distinguishable from its congeners by the following characteristics: reduced laminar circularis at the base of the pectoral fins in males; color pattern including 9-13 vertical bars on the body; 13-14 gill rakers; 17-20 caudal vertebrae; and small scales with a large focal area. Its unique discontinuous distribution on the Korean Peninsula is discussed and the biogeographic implications considered.