gracilis, Acanthorhodeus Regan [C. T.] 1908:60, Pl. 2 (fig. 1) [Proceedings of the Zoological Society of London 1908 (pt 1) (art. 3) (for 4 Feb. 1908); ref. 14334] Chong-ju, South Korea. Lectotype: BMNH 1907.12.10.51. Paralectotypes: BMNH 1907.12.10.52 (1). •In genus Acheilognathus -- (Arai & Akai 1988:208 [ref. 6999]). •Valid as Acanthorhodeus gracilis Regan 1908 -- (Kim 1997:190 [ref. 24032], Kim & Park 2002:92 [ref. 25913], Choi et al. 2003:156, 504 [ref. 26218]). •Synonym of Acanthorhodeus chankaensis (Dybowski 1872) -- (Bogutskaya & Naseka 2004:42 [ref. 28183]). Current status: Synonym of Acheilognathus chankaensis (Dybowski 1872). Acheilognathidae. Distribution: South Korea. Habitat: freshwater.