guentheri, Leucogobio Ishikawa [C.] 1901:161, Pl. 3 (fig. 1) [Annotationes Zoologicae Japonenses v. 3 (pt 4); ref. 14756] Lake Biwa, western central Honshu, Japan. No types known. •Synonym of Gnathopogon elongatus (Temminck & Schlegel 1846) -- (Bănărescu & Nalbant 1967:346 [ref. 20623]). •Synonym of Gnathopogon elongatus, subspecies elongatus (Temminck & Schlegel 1846) -- (Okada 1961:424 [ref. 6363]). Current status: Synonym of Gnathopogon elongatus (Temminck & Schlegel 1846). Gobionidae. Habitat: freshwater.