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 ...

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

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

In the wide, sandy stretches of Brazil’s Araguaia River, the piraíba, South America’s largest catfish, is a cornerstone of local fisheries. Fishers often recognize individual fish by markings and ...

By Francesco De Augustinis Dozens of migratory animals, including 33 marine species, gained new protections during the recent ...