EN

Karasu tarek

Alburnus timarensis

Declining

Overview

A detailed profile for this species is sourced from the IUCN Red List of Threatened Species as assessments become available.

Alburnus timarensis faces severe threats from water extraction and dam construction along the Tigris River system, which has dramatically reduced water levels and altered flow patterns in its native habitat. Agricultural runoff and urban pollution have degraded water quality, while introduced fish species compete for resources and potentially hybridize with native populations. The species' extremely limited range makes it particularly vulnerable to any environmental changes or human activities within its watershed.

Threat summary

Habitat

This endemic cyprinid fish inhabits the freshwater systems of the Tigris River basin in southeastern Turkey, specifically in clear, flowing waters with rocky or gravelly substrates. The species requires well-oxygenated waters and is adapted to the specific temperature and flow regimes of its native river system.

FRESHWATER· major

Conservation measures underway

Awareness & communications

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Frequently asked questions

Why is Karasu tarek classified as Endangered?
Karasu tarek is classified as Endangered — facing a very high risk of extinction in the wild — because population numbers are declining steeply and key habitats are under sustained pressure. Alburnus timarensis faces severe threats from water extraction and dam construction along the Tigris River system, which has dramatically reduced water levels and altered flow patterns in its native habitat. Agricultural runoff and urban pollution have degraded water quality, while introduced fish species compete for resources and potentially hybridize with native populations. The species' extremely limited range makes it particularly vulnerable to any environmental changes or human activities within its watershed.
Where does Karasu tarek live?
Karasu tarek occurs in Türkiye. Country-level distribution data is sourced from the IUCN Red List and cross-referenced with GBIF occurrences.
What are the main threats to Karasu tarek?
The main threats to Karasu tarek are 1.1, 11.4, 7.2, and 9.1. The full IUCN-classified threat record for this species is detailed on the species page.

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