CR

Graecoanatolica macedonica

UnknownEXEUEXEU

Overview

Graecoanatolica macedonica is an extinct species of small freshwater snail, an aquatic gastropod mollusk in the family Hydrobiidae.

Graecoanatolica macedonica is a freshwater snail restricted to Lake Ohrid and its immediate vicinity in North Macedonia and Albania, making it acutely vulnerable to localized environmental change. Nutrient enrichment from agricultural runoff and untreated sewage around the lake basin is altering water quality and littoral habitat structure on which this species depends. Shoreline development for tourism and infrastructure has further degraded the shallow-water substrates used by the species, while its extremely restricted range means any single pollution event or habitat disturbance could affect a large proportion of the population.

Threat summary

Habitat

This species is confined to the littoral zone of ancient Lake Ohrid, one of Europe's oldest lakes, where it inhabits shallow, clear-water substrates along the shoreline.

Other threatened species in HYDROBIIDAE

VU

Wekiwa Siltsnail

Floridobia wekiwae

Unknown
VU

Floridobia monroensis

Unknown
EN

Ohrigocea stankovici

Unknown
EN

Palacanthilhiopsis margritae

Unknown

Frequently asked questions

Why is Graecoanatolica macedonica classified as Critically Endangered?
Graecoanatolica macedonica 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. Graecoanatolica macedonica is a freshwater snail restricted to Lake Ohrid and its immediate vicinity in North Macedonia and Albania, making it acutely vulnerable to localized environmental change. Nutrient enrichment from agricultural runoff and untreated sewage around the lake basin is altering water quality and littoral habitat structure on which this species depends. Shoreline development for tourism and infrastructure has further degraded the shallow-water substrates used by the species, while its extremely restricted range means any single pollution event or habitat disturbance could affect a large proportion of the population.
Where does Graecoanatolica macedonica live?
Graecoanatolica macedonica occurs in across multiple regions. Country-level distribution data is sourced from the IUCN Red List and cross-referenced with GBIF occurrences.
What are the main threats to Graecoanatolica macedonica?
The main threats to Graecoanatolica macedonica 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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