ophiocephalus, Gobius Pallas [P. S.] 1814:153 [Zoographia Rosso-Asiatica v. 3; ref. 3351] Coasts of the Crimea, Ukraine [Black Sea]. No types known. •Valid as Zosterisessor ophiocephalus (Pallas 1814) -- (Miller 1973:513 [ref. 6888], Arruda 1997:105 [ref. 24952], Bilecenoğlu et al. 2002:136 [ref. 26753], Pinchuk et al. in Miller 2004:5 [ref. 27853], Bogutskaya & Naseka 2004:237 [ref. 28183], Vassilev & Pehlivanov 2005:184 [ref. 28369], Fricke et al. 2007:108 [ref. 29533], Kottelat & Freyhof 2007:551 [ref. 29996], Ninua & Japoshvili 2008:172 [ref. 31251], Lipej & Dulčić 2010:68 [ref. 36649], Kovačić & Patzner 2011:188 [ref. 31737], Kovačić & Šanda 2016:1121 [ref. 34173], Artüz & Fricke 2019:560 [ref. 36612], Manilo 2020:76 [ref. 37795], Tutman et al. 2020:8 [ref. 38008], Abliazov et al. 2021:11 [ref. 38576], Bañón & Maño 2021:92 [ref. 38887]). •Valid as Gobius ophiocephalus Pallas 1814 -- (Berg 1949:1080 [ref. 20662], Miller in Whitehead et al. 1986:1085 [ref. 13677], Kottelat 1997:181 [ref. 22952], Reshetnikov et al. 1997:754 [ref. 24702], Vasil'eva 1998:134 [ref. 23591], Vasil'eva 2003:S45 [ref. 28444], Vasil'eva 2007:156 [ref. 30517], Parin et al. 2014:482 [ref. 33547], Parin et al. 2015:482 [ref. 33547], Carneiro et al. 2019:181 [ref. 37250], Kovačić 2020:77 [ref. 37932], Kovačić et al. 2020:25 [ref. 37519], Iglésias et al. 2021:14 [ref. 38136], Kovačić et al. 2021:40 [ref. 39014], Parenti 2021:179 [ref. 38603], Kovačić et al. 2022: 61 [ref. 39303], Renoult et al. 2022:166 [ref. 39288]). Current status: Valid as Gobius ophiocephalus Pallas 1814. Gobiidae: Gobiinae. Distribution: Mediterranean Sea; Sea of Marmara; Black Sea; Sea of Azov. Habitat: brackish, marine.