In the wide, sandy stretches of Brazil’s Araguaia River, the piraíba, South America’s largest catfish, is a cornerstone of ...

Bass in southeastern rivers turn out to be two species, highlighting hidden diversity and growing threats from habitat ...

Freshwater fish are now the most imperilled vertebrates on the planet, with migratory species being particularly vulnerable ...

Hidden beneath the surface of the world’s rivers, some of Earth’s great animal movements unfold—migrations that rival, in ...

Some of the longest, most important migrations of species on Earth are happening beneath the surface of the world's rivers ...

Freshwater fish are vanishing from the world’s rivers, with migratory species down 81 percent due to dams, pollution, and ...

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 ...