Known only from Anatolian Mediterranean Sea watersheds; Manavgat River, Antalya (Ref. 106151). Sensitive to human activities. Considered a keystone species. Populations have declined significantly. Threatened due to habitat loss, eutrophication/pollution, construction of weirs/dams in rivers and water abstraction. Proposed for Annex II of the EU Habitats Directive (Ref. 58342).
Status of threat: Endangered (Ref. 58342). "nEurTurk."