caspius, Gobius Eichwald [C. E. von] 1831:76 [Zoologia specialis quam expositis animalibus tum vivis Pars posterior [3]; ref. 5562] Caspian Sea. No types known. Also appeared as new in Eichward 1838:105 [ref. 34622]. •Valid as Neogobius caspius (Eichwald 1831) -- (Berg 1949:1094 [ref. 20662], Coad 1995:31 [ref. 23608], Reshetnikov et al. 1997:755 [ref. 24702], Vasil'eva 1998:138 [ref. 23591], Coad 1998:103 [ref. 23869], Pinchuk & Miller 2003:173 [ref. 27345], Bogutskaya & Naseka 2004:229 [ref. 28183], Neilson & Stepien 2009:96 [ref. 30487], Esmaeili et al. 2010:377 [ref. 33391], Freyhof 2011:284 [ref. 31742], Stepien & Neilson 2013:2 [ref. 35325], Jouladeh-Roudbar et al. 2015:899 [ref. 34062], Davoodi & Rahimian 2016:82 [ref. 34954], Esmaeili et al. 2017:83 [ref. 35254], Esmaeili et al. 2018:65 [ref. 36089], Jouladeh-Roudbar et al. 2020:236 [ref. 37983], Parenti 2021:73 [ref. 38603], Zarei et al. 2021:[6] [ref. 38262], Zarei et al. 2022:175 [ref. 39576], Çiçek et al. 2024:307 [ref. 40789]). Current status: Valid as Neogobius caspius (Eichwald 1831). Gobiidae: Gobiinae. Distribution: Eurasia: Caspian Sea basin. Habitat: freshwater, brackish.