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 Syngnathus caspius Eichwald, 1831 – Native ( Fig. 415 ) Syngnathus caspius Eichwald [C. E. von] 1831: 61; Type locality: Balkhan Bay, Caspian Sea. Syntypes : whereabouts unknown. Common name : Pr: Ney Mahi, En: Caspian pipefish. Diagnosis : The extremely thin, elongate body encased in bony rings is unique in Iran . Meristic characters : D: I 30–43, A: 3, P: 11–15, V: I 0–1, TV: 52–59. Distribution : Caspian Sea basin ( Fig. 416 ). Found in Anzali Wetland and neighbouring river, Amirkelayee Lagoon near Lahijan, Gorgan Bay, lower reaches of the Caspian Sea rivers, the southeast Caspian Sea, southwest Caspian Sea and south-central Caspian Sea, including the deltas of some rivers. Ta x o n o m y : B e rg (1 9 4 9) p l a c e d c a s p i u s i n Syngnathus nigrolineatus as subspecies, Coad (1995) synonymized with Syngnathus abaster but Esmaeili et al. (2010) regard as valid and full species. Conservation : IUCN: Data Deficient ( Pollom 2017 ).