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 ...

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

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

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

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

Thousands of fish species are facing "catastrophic" decline — threatening the health, food security and livelihoods of hundreds of millions of people around the world. New research shows that ...