Benthophilus ragimovi is a deepwater species of gobiid fish found along the western coasts of the Caspian Sea, from the Chechen Island to Astara, Azerbaijan.Boldyrev V.S., Bogutskaya N.G. (2007) Revision of the tadpole-gobies of the genus Benthophilus (Teleostei: Gobiidae). Ichthyol. Explor. Freshwaters, 18(1): 31-96. It is one of the numerous species of benthophiline gobies endemic to the Ponto-Caspian region (Caspian and Black Sea basins).
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