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

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 ...

A sweeping global report finds that migratory freshwater fish are in steep decline, with populations down roughly 81% since ...

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