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flag UN report warns migratory freshwater fish declined 81% due to dams and pollution.

flag A new UN report warns that migratory freshwater fish populations have declined by about 81% since the 1970s, with 325 species needing urgent international conservation action due to dams, pollution, and overfishing. flag Scientists highlight the need for cross-border cooperation to restore river connectivity in major basins like the Amazon and Mekong, where these fish support millions of people and ecosystems.

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