Alburnoides idignensis, Bogutskaya & Coad, 2009

Freyhof, JÖrg, Yoğurtçuoğlu, Baran, Jouladeh-Roudbar, Arash & Kaya, Cüneyt, 2025, Handbook of Freshwater Fishes of West Asia, De Gruyter : 292-293

Alburnoides idignensis

Common name. Kermanshah spirlin.

Diagnosis. Distinguished from other species of Alburnoides in Euphrates and Tigris drainages by: ○ horizontal eye diameter smaller than interorbital distance / ○ no pronounced chin / ○ tip of mouth cleft situated at a horizontal line with lower margin of pupil to lower margin of eye / ○

ventral keel usually partly to completely scaleless / ○ snout stout / ○ mouth terminal or subterminal / ○ 39−49+2−3, usually 40−46+2−3, lateral-line scales / ○ 9−12½, usually 11−12½, branched anal rays / ○ usually 8½ but frequently 7½ branched dorsal rays / ○ 6–10 gill rakers / ○ 37−40, usually 39, total vertebrae / ○ caudal lobes rounded / ○ anal with straight or convex outer margin. Size up to 90 mm SL.

Alburnoides kosswigi ; Sakarya drainage, Türkiye; ~ 90 mm SL.

Distribution. Iran: Karkheh and upper Dez (Karun) drainages.

Habitat. Streams and rivers with fast-flowing water, usually with cobble and gravel substrate.

Biology. No data.

Conservation status. LC.

Remarks. Alburnoides idignensis , A. namaki , and A. nicolausi are closely related, and future studies may not support them as independent species.

Further reading. Bogutskaya & Coad 2009 (description); Mousavi-Sabet et al. 2015c (review); Eagderi et al. 2019a (phylogeny).