French nase
VU

French nase

Parachondrostoma toxostoma

UnknownVUEUVUEU

Photo: Wikimedia Commons (CC) via https://en.wikipedia.org/wiki/South-west_European_nase

Overview

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

The French nase faces severe population declines primarily due to river regulation and dam construction that fragments its habitat and disrupts spawning migrations. Water pollution from agricultural runoff and urban development degrades water quality in its native river systems. Climate change exacerbates these pressures by altering flow regimes and increasing water temperatures beyond the species' tolerance levels.

Threat summary

Habitat

The French nase inhabits clear, fast-flowing rivers and streams with rocky or gravelly substrates in Mediterranean river systems of southern France. It requires well-oxygenated waters and access to shallow spawning areas with suitable gravel beds for reproduction.

FRESHWATER· major

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Frequently asked questions

Why is French nase classified as Vulnerable?
French nase is classified as Vulnerable because the population is declining and the species faces a high risk of extinction in the medium-term future if current pressures continue. The French nase faces severe population declines primarily due to river regulation and dam construction that fragments its habitat and disrupts spawning migrations. Water pollution from agricultural runoff and urban development degrades water quality in its native river systems. Climate change exacerbates these pressures by altering flow regimes and increasing water temperatures beyond the species' tolerance levels.
Where does French nase live?
French nase occurs in France, Italy, Spain, and Switzerland. Country-level distribution data is sourced from the IUCN Red List and cross-referenced with GBIF occurrences.
What are the main threats to French nase?
The main threats to French nase are ai-1, ai-2, ai-3, and ai-4. The full IUCN-classified threat record for this species is detailed on the species page.

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