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 PMC7807176 33456548 12822787 Periophthalmus waltoni Koumans, 1941 – Native ( Fig. 440 ) Periophthalmus waltoni Koumans [F. P.] 1941: 288; Type locality: Iraq and Pakistan . Syntypes : RMNH 17004 (2), ZSI (4, not found). Common name : Pr: Sag mahi, Gel khorake Walton, En: Walton’s mudskipper. Diagnosis : Distinguished by pelvic fins with a well-developed sucker, basal membrane or frenum. The anal fin base and D 2 base are 27% SL or less and there are no canine teeth internal to the lower jaw symphysis. Meristic characters : D 1 : X–XIV, D 2 : I 12–14, A: I 10–13, P: 13–15, LS: 90–121, TV:?. Distribution : Tigris, Persis , Hormuz and Makran basins ( Fig. 441 ). Taxonomy . Conservation : IUCN: Not Evaluated, PC: Least Concern. This species occurs in abundance across its distribution range and no known major threat seems to affect its populations. Therefore, we classified it as Least Concern.