Nearly half of Europe’s freshwater fish species are at risk of extinction, according to a new assessment by the International Union for Conservation of Nature (IUCN). The findings, part of a broader biodiversity report, cite habitat destruction, pollution, and climate change as primary threats to aquatic ecosystems.
Analysts note that freshwater fish populations have declined by over 80% in some regions since 1970, with migratory species like sturgeon and salmon particularly affected. “This is a systemic collapse of freshwater biodiversity,” said one conservation official familiar with the report. “Without urgent intervention, we risk losing keystone species that entire ecosystems depend on.”
The IUCN’s Red List update identifies 44% of Europe’s 522 freshwater fish species as threatened, including 15 critically endangered. Agricultural runoff, dam construction, and industrial pollution are cited as leading pressures. While protected areas cover 22% of EU freshwater habitats, enforcement remains inconsistent across member states.
Looking ahead, researchers warn that failing to address these trends could destabilize food chains and water quality. The European Commission is expected to propose stricter wetland protections under its 2030 Biodiversity Strategy, though policy analysts question whether implementation will match ambition.