Gobio fahrettini

Freyhof, JÖrg, Yoğurtçuoğlu, Baran, Jouladeh-Roudbar, Arash & Kaya, Cüneyt, 2025, Handbook of Freshwater Fishes of West Asia, De Gruyter : 255-256

Gobio fahrettini

Common name. Ilgın gudgeon.

Diagnosis. Distinguished from other species of Gobio in Anatolia by: ○ 39–42 total lateral-line scales / ○ chest completely scaled, scales extending forward to or almost to isthmus / ○ head length 26–30 % SL / ○ distance between anus and anal origin 5–7 % SL / ○ body depth at dorsal origin 22–27 % SL / ○ numerous small black spots on head / ○ snout long, with rounded tip, 11–14 % SL / ○ caudal peduncle length 1.6–2.2 times its depth / ○ 6–7 scales rows between lateral line and dorsal origin / ○ 6–8 scales between posterior extremity of pelvic base and anus / ○ 6–8 mid-lateral blotches. Size up to 122 mm SL.

Distribution. Türkiye: Lake Ilgın basin.

Habitat. Slow to moderate-flowing streams with sandy or gravelly bottoms.

Biology. No data.

Conservation status. EN; appears to be declining within its very small range.

Remarks. Some individuals of G. fahrettini share their mitochondrial DNA with G. microlepidotus , and the two species may have hybridised in the past. The reasons for this hybridisation are not known, but the artificial introduction of G. microlepidotus into the Ilgın basin cannot be excluded.

Further reading. Turan et al. 2018b (description).

Gobio gymnostethus ; Melendiz drainage, Türkiye; ~ 120 mm SL.