dolichognathus, Gobius Hilgendorf [F. M.] 1879:108 [Sitzungsberichte der Gesellschaft Naturforschender Freunde zu Berlin 1879; ref. 21467] Japan. Syntypes: ZMB 10651, 10654. •Valid as Chasmichthys dolichognathus (Hilgendorf 1879) -- (Lindberg & Krasyukova 1975:386 [ref. 7348], Akihito in Masuda et al. 1984:275 [ref. 6441], Shimizu 2001:39 [ref. 25799], Choi et al. 2003:399, 659 [ref. 26218]). •Synonym of Chaenogobius annularis Gill 1859 -- (Stevenson 2000:835 [ref. 24583], Stevenson 2002:259 [ref. 26489]). Current status: Synonym of Chaenogobius annularis Gill 1859. Gobiidae: Gobionellinae. Habitat: freshwater.