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

The UN assessment of the state of migratory freshwater fish revealed an 81% decline in the last 50 years.

Discover the alarming trends in freshwater migratory fish species declines, with an 81 percent population drop since 1970.

Some of the longest, most important migrations of species on Earth are happening beneath the surface of the world's rivers and many are rapidly collapsing, according to a major new assessment by the ...

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

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