breunigii, Gobius Steindachner [F.] 1879:140 [22] [Sitzungsberichte der Kaiserlichen Akademie der Wissenschaften. Mathematisch-Naturwissenschaftliche Classe v. 80 (nos 1-2); ref. 4229] Hakodate, Oshima Subprefecture, Hokkaido, Japan. Syntypes: NMW 30276 (8). On p. 22 of separate. •Synonym of Chaenogobius annularis Gill 1859 -- (Okada 1961:676 [ref. 6363]). •Valid as Gymnogobius breunigii (Steindachner 1879) -- (Stevenson 2002:276 [ref. 26489], Hagiwara 2003:38 [ref. 27188], Vasil'eva 2003:S45 [ref. 28444] dated 1880, Bogutskaya & Naseka 2004:222 [ref. 28183], Vasil'eva 2005:710 [ref. 28421], Shedko & Chereshnev 2005:438 [ref. 30089] in subgenus Chloea, Matsui et al. 2014:10 [ref. 33344], Parin et al. 2014:485 [ref. 33547], Dyldin & Orlov 2017:188 [ref. 35257], Kim et al. 2020:169 [ref. 39118], Sonoyama et al. 2020:104 [ref. 37637], Dyldin et al. 2021:35 [ref. 38804], Ito et al. 2021:[9] [ref. 38897], Parenti 2021:297 [ref. 38603]). Current status: Valid as Gymnogobius breunigii (Steindachner 1879). Oxudercidae: Gobionellinae. Distribution: Northwestern Pacific: Yellow Sea (China, Korea), Sea of Japan (Korea, Japan, Russia) and Sea of Okhotsk (Russia). Habitat: freshwater, brackish, marine.