nasalis, Gobius De Filippi [F.] 1863:390 [Archivio per la Zoologia, l'Anatomia e la Fisiologia v. 2; ref. 18082] Caspian Sea near Baku. Syntypes: BMNH 1869.3.4.34 (1); MSNG 12655 (2), 36228 (3); MZUT 672 (7); NMW 33894-96 (1, 1, 1); ZMB 5015 (3). Type catalog: Tortonese 1940:144 [ref. 21559], Tortonese 1963:344 [ref. 10350]. Also in De Filippi 1865:312 [ref. 13943]. •Synonym of Proterorhinus marmoratus (Pallas 1814) -- (Berg 1949:1100 [ref. 20662], Miller 1973:511 [ref. 6888], Coad 1995:31 [ref. 23608], Kottelat 1997:181 [ref. 22952], Reshetnikov et al. 1997:757 [ref. 24702], Vasil'eva 1998:145 [ref. 23591], Pinchuk et al. in Miller 2004:72 [ref. 27853]). •Valid as Proterorhinus nasalis (De Filippi 1863) -- (Freyhof & Naseka 2008:326 [ref. 29387], Kottelat & Freyhof 2007:589 [ref. 29996], Neilson & Stepien 2009:98 [ref. 30497], Esmaeili et al. 2010:378 [ref. 33391], Parin et al. 2014:503 [ref. 33547], Jouladeh-Roudbar et al. 2015:900 [ref. 34062], Esmaeili et al. 2017:85 [ref. 35254], Esmaeili et al. 2018:67 [ref. 36089], Jouladeh-Roudbar et al. 2020:246 [ref. 37983], Kuljanishvili et al. 2020:[5] [ref. 37535], Manilo 2020:71 [ref. 37795], Parenti 2021:76 [ref. 38603], Truuverk et al. 2021:703 [ref. 38605], Zarei et al. 2021:[7] [ref. 38262], Zarei et al. 2021:[6] [ref. 38799], Zarei et al. 2022:182 [ref. 39576], Çiçek et al. 2024:315 [ref. 40789]). Current status: Valid as Proterorhinus nasalis (De Filippi 1863). Gobiidae: Gobiinae. Distribution: Eurasia: Southern Caspian Sea basin. Habitat: freshwater.