Freshwater fish populations plunge 81% as river migrations collapse

Freshwater fish populations plunge 81% as river migrations collapse One of Earth’s greatest migrations is collapsing beneath our rivers. - Date: - March 26, 2026 - Source: - Convention on the Conservation of Migratory Species of Wild Animals (CMS) - Summary: - A sweeping global report finds that migratory freshwater fish are in steep decline, with populations down roughly 81% since 1970. These species depend on long, connected rivers, but dams and human pressures are cutting off their routes....