Gobies (Teleostei: Gobiidae) of the oldest and deepest Caspian Sea sub-basin: an evidence-based annotated checklist and a key for species identification Author Zarei, Fatah 0000-0001-5552-4301 Ichthyology and Molecular Systematics Research Laboratory, Zoology Section, Department of Biology, College of Sciences, Shiraz University, Shiraz, Iran. & fataahzarei @ gmail. com; https: // orcid. org / 0000 - 0001 - 5552 - 4301 fataahzarei@gmail.com Author Esmaeili, Hamid Reza 0000-0002-9736-397X Ichthyology and Molecular Systematics Research Laboratory, Zoology Section, Department of Biology, College of Sciences, Shiraz University, Shiraz, Iran. & hresmaeili @ shirazu. ac. ir; https: // orcid. org / 0000 - 0002 - 9736 - 397 X hresmaeili@shirazu.ac.ir Author Abbasi, Keyvan Inland Waters Aquaculture Research Center, Iranian Fisheries Sciences Research Institute, Agricultural Research, Education and Extension Organization, Bandar Anzali, Iran. Author Kovačić, Marcelo Natural History Museum Rijeka, Lorenzov prolaz 1, HR- 51000 Rijeka, Croatia. Author Schliewen, Ulrich K. 0000-0003-0187-4319 SNSB-Bavarian State Collection of Zoology, Department of Ichthyology, Münchhausenstr. 21, 81247 München, Germany. schliewen @ snsb. de; https: // orcid. org / 0000 - 0003 - 0187 - 4319 schliewen@snsb.de Author Stepien, Carol A. 0000-0002-5544-4333 National Museum of Natural History, Department of Vertebrate Zoology, Smithsonian Institution, Washington D. C, USA. StepienCA @ si. edu; https: // orcid. org / 0000 - 0002 - 5544 - 4333 text Zootaxa 2022 2022-09-28 5190 2 151 193 journal article 153839 10.11646/zootaxa.5190.2.1 60faa853-726d-4b71-a3cb-c21a0087515f 1175-5326 7120060 92BFDA7A-28C0-4816-8A91-CFB842C95E96 24. Knipowitschia longecaudata ( Kessler, 1877 ) ( Fig. 19 ), Longtail Dwarf Goby Gobius longecaudatus var. “a” et var. “b” Kessler, 1877: 35 ; type locality: South and Middle Caspian Sea; syntypes : BMNH 1897.7 .5.10 [ex ZIN , var. “c”] (1), ZIN (lost) . Etymology: Latin, longus = long + Latin, cauda = a tail, refers to an elongate caudal region. Distribution and habitat: Western and northwestern Black Sea regions, eastern Azov Sea and Caspian Sea ( Fig. 16D ). No records from the South Caspian Sea according to Miller (2004b). However, for Iran , Abbasi (2017) and we in the present study collected it from coastal waters of Anzali and Astara. Sampled in freshwater to oligohaline and meio-mesohaline salinities (Miller 2004b). Material examined: ZM-CBSU S011, 1 , & ZM-CBSU S012, 1 , off Anzali; ZM-CBSU S018 & ZM-CBSU S019, 138 , off Astara , Gilan Province , Iran . IUCN: LC ( Freyhof & Kottelat 2008h ).