caudatus, Gobius Castelnau [F. L.] 1873:47 [Proceedings of the Zoological and Acclimatisation Society of Victoria, Melbourne v. 2; ref. 758] Victoria market, Australia. Holotype (unique): MNHN A-4559 (half skin). Type catalog: Bauchot et al. 1991:29 [ref. 19958]. •Synonym of Arenigobius bifrenatus (Kner 1865) -- (Gomon et al. 1994:784 [ref. 22532], Hoese & Larson 2006:1624 [ref. 29097], Kuiter 2018:86 [ref. 36369], Parenti 2021:94 [ref. 38603]). Current status: Synonym of Arenigobius bifrenatus (Kner 1865). Gobiidae: Gobiinae. Habitat: brackish, marine.