Salmo okumusi, Turan, Kottelat & Engin, 2014

Freyhof, JÖrg, Yoğurtçuoğlu, Baran, Jouladeh-Roudbar, Arash & Kaya, Cüneyt, 2025, Handbook of Freshwater Fishes of West Asia, De Gruyter : 645

Salmo okumusi

Common name. Western Euphrates trout.

Diagnosis. Distinguished from other species of Salmo in Euphrates and Tigris drainages by: ● flank and back covered by numerous irregularly shaped small red spots and dots, imparting a peppered or slightly marmorate pattern / ● 5–18 black spots on top of head / ○ four broad dark-brown or grey bars on flank, very faintly marked or indistinct in small individuals but distinct in individuals larger than about 230 mm SL / ○ flank greyish / ○ black and red spots on flank irregular shaped / ○ red spots on flank smaller than pupil / ○ 1–22 small black spots in postorbital and suborbital area, smaller than pupil in individuals larger than 120 mm SL / ○ 8–17 small black spots on opercle, smaller than pupil in individuals larger than 120 mm SL / ○ adipose grey, with three or four red to orange spots on its free edge / ○ 10–11 parr marks, distinct up to about 210 mm SL / ○ 103–112 lateral-line scales

counted until end of hypural complex / ● 26–28 scale rows between lateral line and dorsal origin. Size up to 280 mm SL.

Distribution. Türkiye: Göksu, Lake Gökpınar basin (in Tohma drainage), and Sürgü in Euphrates drainage.

Habitat. Headwater streams with cold, clear water, moderate current, gravelly and pebbly bottom.

Biology. Spawns in November.

Conservation status. LC.

Further reading. Turan et al. 2014b (description); Turan et al. 2020 (Cytochrome b phylogeny).