Oxynoemacheilus nasreddini

Oxynoemacheilus nasreddini View in CoL View Figure

Common name. Eber loach.

Diagnosis. Distinguished from other species of Oxynoemacheilus in Central Anatolia and rivers flowing to Bay of Antalya by: ○ a prominent inner axial stripe along midlateral flank / ○ body usually with a series of vertically elongated blotches / ○ tip of pectoral usually reaching to or slightly beyond pelvic origin in male / ○ body depth decreasing between dorsal and caudal base / ○ belly with few, small, embedded scales / ○ caudal–peduncle depth 1.5–2.1 times in its length / ○ caudal emarginate, shortest middle caudal ray 76–91 % of longest ray of upper caudal lobe / ○ prepelvic length 48–55 % SL / ○ usually a series of short bars on caudal peduncle / ○ 2–4 dark-brown bands on caudal / ○ suborbital groove present in male. Size up to 78 mm SL.

Distribution View Figure . Türkiye: Lakes Akşehir, Eber, Eğirdir and Ilgın basins.

Habitat. Slow-flowing streams with gravel or mud bottom.

Biology. No data.

Conservation status. VU; appears to be declining within its small range and has lost several habitats in recent years due to desiccation of streams and massive pollution.

Remarks. Populations from Lake Eğirdir basin share the mtDNA with O. mediterraneus , indicating a past introgressive hybridisation.

Further reading. Yoğurtçuoğlu et al. 2021a (description).