cylindricus, Chaenogobius Tomiyama [I.] 1936:92, Fig. 39 [Japanese Journal of Zoology v. 7 (no. 1) (art. 5); ref. 4413] Hiroshima, Japan. Holotype (unique): ZUMT 30389. •Synonym of Gymnogobius raninus Taranetz 1934 -- (Lindberg & Krasyukova 1975:375 [ref. 7348]). •Valid as Chaenogobius cylindricus Tomiyama 1936 -- (Sheiko 1983:18 [ref. 37041], Akihito in Masuda et al. 1984:277 [ref. 6441], Suzuki & Masuda 1993:2 [ref. 24333], Sokolovskaya et al. 1998:13 [ref. 24670]). •Valid as Gymnogobius cylindricus (Tomiyama 1936) -- (Nakabo 2000:1199 [ref. 25182], Nakabo 2002:1199 [ref. 26193], Stevenson 2002:280 [ref. 26489], Vasil'eva 2003:S46 [ref. 28444], Parin et al. 2014:486 [ref. 33547], Dyldin et al. 2020:93 [ref. 37569], Ito et al. 2021:[9] [ref. 38897], Parenti 2021:297 [ref. 38603]). Current status: Valid as Gymnogobius cylindricus (Tomiyama 1936). Oxudercidae: Gobionellinae. Distribution: Northwestern Pacific: Sea of Japan and East China Sea (southern Japan). Habitat: brackish, marine.