Gobio kizilirmakensis

Freyhof, JÖrg, Yoğurtçuoğlu, Baran, Jouladeh-Roudbar, Arash & Kaya, Cüneyt, 2025, Handbook of Freshwater Fishes of West Asia, De Gruyter : 260

Gobio kizilirmakensis

Common name. Filyos gudgeon.

Diagnosis. Distinguished from other species of Gobio in Anatolia by: ○ 40–43 total lateral-line scales / ○ chest completely scaled, scales extending forward to or almost to isthmus / ○ head length 26–29 % SL / ○ scales on belly smaller than pupil / ○ caudal-peduncle length 2.1–2.7 times its depth / ○ 5–6 scale rows between anus and anal origin / ○ 8–10 scale rows between posterior extremity of pelvic base and anus / ○ 8–9 mid-lateral blotches. Size up to 111 mm SL.

Distribution. Türkiye: Ulusu in Filyos drainage.

Habitat. Moderately fast-flowing streams and small rivers with sandy or gravelly bottoms.

Biology. No data.

Conservation status. EN; appears to be declining within its very small range. Some food factories around Çerkes heavily pollute the Ulusu.

Gobio kovatschevi ; Bakacak, Biga Peninsula, Türkiye; 100 mm SL.

Remarks. Despite its name, this species does not occur in Kızılırmak drainage. The Ulusu was considered a tributary of Kızılırmak, but it belongs to Filyos.

Further reading. Turan et al. 2016a (description); Yoğurtçuoğlu et al. 2020a (distribution).