castelnaui, Gobius Macleay [W.] 1881:598 [Proceedings of the Linnean Society of New South Wales v. 5 (pt 4); ref. 2869] Hobson's Bay, Australia. Holotype (unique): MNHN A-1884. Based on a specimen originally identified as Gobius frenatus by Castelnau 1872:123 [ref. 757]. •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.