melanostomus, Gobius Pallas [P. S.] 1814:151 [Zoographia Rosso-Asiatica v. 3; ref. 3351] Sebvastopol, Crimea, Ukraine; Balaklava, Ukraine. Syntypes: whereabouts unknown. •Valid as Apollonia melanostoma (Pallas 1814) -- (Stepien & Tumeo 2006:64 [ref. 31437]). •Valid as Neogobius melanostomus (Pallas 1814) -- (Berg 1949:1083 [ref. 20662], Miller 1973:503 [ref. 6888], Miller in Whitehead et al. 1986:1062 [ref. 13677], Coad 1995:31 [ref. 23608], Kottelat 1997:178 [ref. 22952], Reshetnikov et al. 1997:755 [ref. 24702], Vasil'eva 1998:140 [ref. 23591], Coad 1998:103 [ref. 23869], Charlebois et al. 1998:3 [ref. 24500], Scott & Crossman 1998:viii [ref. 24570], Fuller et al. 1999:461 [ref. 25838], Bogutskaya et al. 2001:47 [ref. 26178], Bilecenoglu et al. 2002:134 [ref. 26753], Pinchuk et al. 2003:293 [ref. 27349], Vasil'eva 2003:S50 [ref. 28444], Bailey et al. 2004:208 [ref. 27882], Nelson et al. 2004:173 [ref. 27807], Bogutskaya & Naseka 2004:231 [ref. 28183], Vassilev & Pehlivanov 2005:183 [ref. 28369], Fricke 2007:29 [ref. 30577], Fricke et al. 2007:106 [ref. 29533], Kottelat & Freyhof 2007:581 [ref. 29996], Vasil'eva 2007:165 [ref. 30517], Ninua & Japoshvili 2008:172 [ref. 31251], Scharpf 2009:14 [ref. 30400], Neilson & Stepien 2009:96 [ref. 30487], Page & Burr 2011:619 [ref. 31215], Kovačić & Patzner 2011:187 [ref. 31737], Freyhof 2011:284 [ref. 31742]). Current status: Valid as Neogobius melanostomus (Pallas 1814). Gobiidae: Gobiinae. Distribution: Basins of the Black, Azov and Caspian seas; introduced elsewhere (including U.S.A. and Canada). Habitat: freshwater, brackish, marine.