marmoratus, Gobius Pallas [P. S.] 1814:161 [Zoographia Rosso-Asiatica v. 3; ref. 3351] Sebastopol, Crimea, Ukraine. No types known. Syntypes: whereabouts unknown. Kottelat & Freyhof 2007:588 [ref. 29996] state that all freshwater European species of Proterorhinus have been confused under the name P. marmoratus but that the real marmoratus does not enter freshwaters but inhabits brackish waters in Crimea. •Valid as Gobius marmoratus Pallas 1814 -- (Vasil'eva 1999:140 [ref. 24865]). •Valid as Proterorhinus marmoratus (Pallas 1814) -- (Berg 1949:1100 [ref. 20662], Miller 1973:511 [ref. 6888], Miller in Whitehead et al. 1986:1078 [ref. 13677], Lelek 1987:311 [ref. 22962], Mitrofanov & Dukravec 1989:279 [ref. 37748], Coad 1995:31 [ref. 23608], Economidis 1995:207 [ref. 23025], Kottelat 1997:181 [ref. 22952], Reshetnikov et al. 1997:757 [ref. 24702], Vasil'eva 1998:145 [ref. 23591], Ahnelt et al. 1998:666 [ref. 23709], Coad 1998:103 [ref. 23869], Scott & Crossman 1998:ix [ref. 24570], Fuller et al. 1999:462 [ref. 25838], Ahnelt & Duchkowitsch 2001:217 [ref. 25591], Bogutskaya et al. 2001:47 [ref. 26178], Ahnelt & Duchkowitsch 2002:[2] 913 [ref. 27148], Hanel 2003:65 [ref. 27894], Vasil'eva 2003:S52 [ref. 28444], Pinchuk et al. in Miller 2004:72 [ref. 27853], Bailey et al. 2004:209 [ref. 27882], Nelson et al. 2004:173 [ref. 27807], Bogutskaya & Naseka 2004:233 [ref. 28183], Vassilev & Pehlivanov 2005:184 [ref. 28369], Hanel & Lusk 2005:368 [ref. 28804], Stepien & Tumeo 2006:64 [ref. 31437], Freyhof & Naseka 2008:326 [ref. 29387], Fricke et al. 2007:107 [ref. 29533], Kottelat & Freyhof 2007:588 [ref. 29996], Vasil'eva 2007:170 [ref. 30517], Vasil'eva 2007:172 [ref. 30517], Neilson & Stepien 2009:677 [ref. 30119], Neilson & Stepien 2009:98 [ref. 30487], Freyhof 2011:286 [ref. 31742], Psomadakis et al. 2012:17 [ref. 33457], Stepien & Neilson 2013:2 [ref. 35325], Parin et al. 2014:502 [ref. 33547], Kaya et al. 2020:328 [ref. 37582], Manilo 2020:71 [ref. 37795], Tutman et al. 2020:8 [ref. 38008], Parenti 2021:76 [ref. 38603], Zarei et al. 2021:[6] [ref. 38799], Niță et al. 2022:82 [ref. 40471]). Current status: Valid as Proterorhinus marmoratus (Pallas 1814). Gobiidae: Gobiinae. Distribution: Eurasia: northwestern Black Sea basin. Habitat: freshwater, brackish, marine.