Oxynoemacheilus fatmae

Freyhof, JÖrg, Yoğurtçuoğlu, Baran, Jouladeh-Roudbar, Arash & Kaya, Cüneyt, 2025, Handbook of Freshwater Fishes of West Asia, De Gruyter : 504

Oxynoemacheilus fatmae

Common name. Güzelhisar loach.

Diagnosis. Distinguished from other species of Oxynoemacheilus in Aegean basin by: ○ belly with few, small, embedded scales / ○ caudal emarginate, middle caudal ray 71–91 % of length of longest upper caudal ray / ○ body depth almost uniform between dorsal and caudal base (ratio of body depth at posterior of dorsal base to body depth at caudal base is equal or almost equal to 1) / ○ body depth at dorsal origin 15–17 % SL / ○ caudal peduncle 10–12 % SL /

○ length of middle caudal ray 16–19 % SL / ○ no dorsal and ventral adipose crests on caudal peduncle behind vertical of posterior anal base. Size up to 70 mm SL.

Distribution. Türkiye: Güzelhisar drainage in northeastern Aegean basin.

Habitat. Moderate to fast-flowing streams with gravel substrate.

Biology. No data.

Conservation status. VU.

Further reading. Turan et al. 2024b (description).

Oxynoemacheilus fatsaensis ; Yeşilırmak drainage, Türkiye; 50 mm SL.© M. Özuluğ.