isaza, Chaenogobius Tanaka [S.] 1916:102 [Dobutsugaku Zasshi = Zoological Magazine Tokyo v. 28; ref. 4327] Fisheries Experiment Station, Lake Biwa, Shiga Prefecture, Japan. Holotype (unique): ZUMT 57520. •Valid as Chaenogobius annularis Gill 1859, subspecies isaza Tanaka 1916 -- (Kuroda 1953:277 [ref. 39545]). •Valid as Chaenogobius isaza Tanaka 1916 -- (Okada 1961:680 [ref. 6363], Akihito in Masuda et al. 1984:277 [ref. 6441], Kawanabe & Mizuno 1989:616 [ref. 25598], Matsuura et al. 2000:224 [ref. 26000]). •Valid as Gymnogobius isaza (Tanaka 1916) -- (Nakabo 2000:1198 [ref. 25182], Nakabo 2002:1198 [ref. 26193], Harada et al. 2002:326 [ref. 26496], Stevenson 2002:295 [ref. 26489], Ito et al. 2021:[9] [ref. 38897], Parenti 2021:297 [ref. 38603]). Current status: Valid as Gymnogobius isaza (Tanaka 1916). Oxudercidae: Gobionellinae. Distribution: East Asia: Lake Biwa (Japan) endemic. Habitat: freshwater.