Fig. 4 in Fig. 4 in Fig. 3 in Fig. 21. Sesarmops mora n in Paralbunea dayriti Author Jouladeh-Roudbar, Arash Department of Fisheries, Faculty of Natural Resources, University of Tehran, Karaj, Alborz, Iran. E-mail: jouladehroudbar @ ut. ac. ir jouladehroudbar@ut.ac.ir Author Ghanavi, Hamid Reza Department of Biology, Lund University, Lund, Sweden. * Correspondence: E-mail: hamid. ghanavi @ gmail. com (Ghanavi) hamid.ghanavi@gmail.com Author Doadrio, Ignacio Biodiversity and Evolutionary Biology Department, Museo Nacional de Ciencias Naturales-CSIC, Madrid, Spain. E-mail: doadrio @ mncn. csic. es doadrio@mncn.csic.es text Zoological Studies 2020 2020-06-29 59 21 1 303 http://dx.doi.org/10.5281/zenodo.12822535 journal article 10.6620/ZS.2020.59-21 1810-522X Proterorhinus nasalis (De, Filippi 1863) – Native ( Fig. 452 ) Gobius nasalis De Filippi [F.] 1863: 390; Type locality: 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). Gobius blennioides Kessler [ K. F. ] 1877: 12; Type locality: Baku Bay, Caspian Sea, Azerbaijan , depth 42 feet [6 Russian fathoms]. Holotype (unique): ZIN 10903 . Gobius semipellucidus Kessler [ K. F. ] 1877: 15; Type locality: Mouth of Karasu River , Astrabad Bay , Caspian Sea, Azerbaijan . Holotype (unique): ZIN (not found in 1996). Common name : Pr: Gav mahi marmari, Gav mahi bini loleyi, En: Eastern tubenose goby. Diagnosis : Distinguished by moderate head and the anterior nostrils forming a distinctive and obvious tube and the origin of D 1 is displaced anteriorly. Meristic characters : D 1 : VI, D 2 : I 12–20 (16–17), A: I–II 11–17 (13–14), P: 14–16, LS: 34–53, TV: 30– 33. Distribution : Caspian Sea basin ( Fig. 453 ). Reported from the southeast Caspian Sea, the southwest Caspian Sea and the south-central Caspian Sea. The main populations found in Anzali Wetland and Gorgan Bay. Taxonomy : Berg (1949) synonymized with Proterorhinus marmoratus but Freyhof and Naseka (2007) regard as valid and full species. Conservation : IUCN: Least Concern (Freyhof and Kottelat 2008ad).