Ichthyofauna From Iranian Freshwater: Annotated Checklist, Diagnosis, Taxonomy, Distribution and Conservation Assessment Jouladeh-Roudbar, Arash Ghanavi, Hamid Reza Doadrio, Ignacio Zoological Studies 2020 2020-06-29 59 21 1 14 423LC (Iljin, 1936) Iljin 1936 [156,608,988,1013] Gobiidae Mesogobius Animalia Perciformes 235 236 Chordata species nonultimus   Common name: Pr: Vazagh mahi Caspian, En: Caspian toad goby.  Diagnosis: Three (rather than the more usual two) transverse head papillae rows between rows band d. Nape with undeveloped ctenoid scales, almost reaching median pore κ, snout lager than eye diameter, lower jaw not protruding, and males with distinct breeding colors.  Meristic characters: D 1: VI–VII, D 2: I 16–19 (17–18), A: I 15–18, P:?, LS: 73–83, TV:?.  Distribution: Caspian basin ( Fig. 434). Mainly in southern parts of Caspian Sea.  Taxonomy: Berg (1949)placed in  Mesogobius.  Conservation: IUCN: NotEvaluated, PC: Data Deficient. There are not enough data on this species to accurately evaluate its conservation status. [313,350,1052,1071] Behrens-Chapuis S & Caspian Sea Turkmenistan 24 Ulsky Bank 235 236 1 holotype