161. Gobio nigrescens (Keyserling, 1861)

Common name. Dusky gudgeon

Taxonomy. Original description: Bungia nigrescens Keyserling, 1861: 19 [22], pl. 8 [Harirud River at Herat, Afghanistan; no types preserved] .

Revisions. Mousavi-Sabet et al. (2016).

Illustrations. Mousavi-Sabet et al. (2016: 74-77, fig. 3-6).

Distribution in Iran. —Distribution in River Basin: Hari River.—Distribution in Ecoregions: 631-Upper Amu Darya.

Status in Iran. [Native].—Kapor kafzi-e Harirud.—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: VMFC, FSJF.

Conservation. —IUCN: NE.