leptorhynchus, Benthophilus Kessler [K. F.] 1877:56, Pl. 5 (figs. 12-12a) [The Aralo-Caspian Expedition; ref. 2597] Middle Caspian Sea, depth 490 feet [70 Russian fathoms]. lectotype: ZISP [= ZIN] 10895 (damaged). Paralectotypes: (2) whereabouts unknown. Lectotype selected by Boldyrev & Bogutskaya 2007:42 [ref. 29150]. •Valid as Benthophilus leptorhynchus Kessler 1877 -- (Berg 1949:1120 [ref. 20662], Coad 1995:29 [ref. 23608], Reshetnikov et al. 1997:753 [ref. 24702], Vasil'eva 1998:129 [ref. 23591], Pinchuk & Miller in Miller 2004:220 [ref. 27853], Bogutskaya & Naseka 2004:217 [ref. 28183], Boldyrev & Bogutskaya 2007:41 [ref. 29150], Neilson & Stepien 2009:96 [ref. 30487], Esmaeili et al. 2010:376 [ref. 33391], Jouladeh-Roudbar et al. 2015:897 [ref. 34062], Esmaeili et al. 2017:81 [ref. 35254], Esmaeili et al. 2018:62 [ref. 36089], Parenti 2021:71 [ref. 38603], Zarei et al. 2022:168 [ref. 39576]). Current status: Valid as Benthophilus leptorhynchus Kessler 1877. Gobiidae: Gobiinae. Distribution: Eurasia: Caspian Sea basin. Habitat: brackish.