240. Mesogobius nonultimus (Iljin, 1936)

Common name. Oriental river goby

Taxonomy. Original description: Gobius nonultimus Iljin, 1936: 337 [24 miles southwest of Ulsky Bank, Caspian Sea, depth 24 meters over bottom depth of 54 meters, Turkmenistan; no types known] .

Revisions. None.

Illustrations. Zarei et al. (2022a: 173, fig. 20).

Distribution in Iran. —Distribution in River Basin: Caspian Sea.―Distribution in Ecoregions: 434-Kura-South Caspian Drainages, 452-Caspian Marine.

Status in Iran. [Native].—Vazagh mahi-e Caspian.—Listed in previous checklists from Iran by Esmaeili et al. (2017 a, 2018); Jouladeh-Roudbar et al. (2020) and Eagderi et al. (2022).—Iran material: ZM-CBSU.

Conservation. —IUCN: DD.