CR

Traun Whitefish

Coregonus danneri

DecliningVUEUVUEU

Overview

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

Coregonus danneri faces severe threats from habitat degradation and water quality deterioration in its limited alpine lake systems. Eutrophication from agricultural runoff and climate change-induced warming are altering the cold, oligotrophic conditions this whitefish requires for survival. The species' extremely restricted range makes it particularly vulnerable to localized environmental changes and potential hybridization with introduced fish species.

Threat summary

Habitat

This endemic whitefish inhabits cold, deep alpine lakes in the European Alps, typically found in oligotrophic waters with high oxygen content. The species requires pristine lake environments with specific temperature and nutrient conditions characteristic of high-altitude freshwater systems.

Wetlands (inland) - Permanent freshwater lakes· major

Conservation measures underway

Resource & habitat protectionSpecies managementSpecies recoveryLegislation

Other threatened species in SALMONIDAE

EN

Brachymystax savinovi

Declining
Oncorhynchus formosanusCR

Oncorhynchus formosanus

Unknown
VU

Noble Whitefish

Coregonus nobilis

Unknown
VU

Dwarf Limmat Whitefish

Coregonus heglingus

Unknown

Threatened in Austria

VU

Lepiota echinella

Unknown
EN

Lyophyllum deliberatum

Unknown
VU

Large Tree-chernes

Dendrochernes cyrneus

Unknown
Scarce BlackneckCR

Scarce Blackneck

Lygephila craccae

Unknown

Frequently asked questions

Why is Traun Whitefish classified as Critically Endangered?
Traun Whitefish is classified as Critically Endangered — facing an extremely high risk of extinction in the wild — because population sizes are very small, declining sharply, or restricted to a tiny range. Coregonus danneri faces severe threats from habitat degradation and water quality deterioration in its limited alpine lake systems. Eutrophication from agricultural runoff and climate change-induced warming are altering the cold, oligotrophic conditions this whitefish requires for survival. The species' extremely restricted range makes it particularly vulnerable to localized environmental changes and potential hybridization with introduced fish species.
Where does Traun Whitefish live?
Traun Whitefish occurs in Austria. Country-level distribution data is sourced from the IUCN Red List and cross-referenced with GBIF occurrences.
What are the main threats to Traun Whitefish?
The main threats to Traun Whitefish are 1.1, 11.1, 8.1, and 8.3. The full IUCN-classified threat record for this species is detailed on the species page.

Get weekly conservation intelligence

One short digest a week of the most striking species and country data we ship, plus breaking conservation news paired with our database where it matters.

Free, no spam. One-click unsubscribe in every email.