filamentosus, Gobius Castelnau [F. L.] 1875:19 [Official Record, containing Introduction, Catalogues, Official Awards of the Commissioners, Report and Recommendations of the Experts, and Essays and Statistics on the Social and Economic Resources of the Colony of Victoria.; ref. 768] Adelaide, South Australia. Holotype (unique): MNHN A-1089. Type catalog: Bauchot et al. 1991:32 [ref. 19958]. Objectively invalid; preoccupied by Gobius filamentosus Risso 1827. •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]). 1°Homonym. Current status: Synonym of Arenigobius bifrenatus (Kner 1865). Gobiidae: Gobiinae. Habitat: brackish, marine.