Published November 12, 2025 | Version v1
Taxonomic treatment Open

Alburnus demiri Ozulug & Freyhof 2008

Description

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).

Notes

Published as part of Freyhof, Jörg, Yoğurtçuoğlu, Baran, Jouladeh-Roudbar, Arash & Kaya, Cüneyt, 2025, Handbook of Freshwater Fishes of West Asia, GmbH, Berlin / Boston :De Gruyter on page 314, DOI: 10.1515/9783111677811, http://zenodo.org/record/17881367

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Linked records

Additional details

Biodiversity

References

  • Ozulug, M. & J. Freyhof. 2008 a. Alburnus demiri, a new species of bleak from western Anatolia, Turkey (Teleostei: Cyprinidae). Ichthyological Exploration of Freshwaters 18: 307-312.
  • Mangit, F. & S. Yerli. 2018. Systematic evaluation of the genus Alburnus (Cyprinidae) with description of a new species. Hydrobiologia 807: 297-312. https://doi.org/10.1007/s10750-017-3405-y