Alburnus demiri

Common name. Eastern Aegean bleak.

Diagnosis. Distinguished from other species of Alburnus in Central Anatolia, Aegean, Marmara, and Black Sea basins by: ○ 43–46+3 scales in lateral line / ○ 13–14½ branched anal rays / ○ 9 scale rows between lateral line and dorsal origin / ○ 18–21 gill rakers / ○ ventral keel exposed for 6–9 scales in front of anus / ○ caudal peduncle depth 10.5–11.1 % SL. Size up to 90 mm SL.

Distribution . Türkiye:Tahtalı and Küçük Menderes drainages.

Habitat. A wide range of moderately fast-flowing streams and rivers with gravel substrate. Reservoir populations migrate to tributaries to spawn.

Biology. Spawns May–June.

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

Further reading. Özuluğ & Freyhof 2008a (description); Mangit & Yerli 2018 (distribution).