Vast journeys, among world’s great wonders, found to be under threat as freshwater fish populations crash by 81% ...

From the Andes to the Atlantic and back again, the dorado catfish reveals the connectivity of one of the world’s largest ...

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

A new species of Amazonian fish, Pyrrhulina punctata, has been discovered in Peru, revealing previously unknown biodiversity ...

Deep in the vast rivers and flooded forests of the Amazon Basin, there lives a fish that appears to be prehistoric in both size and appearance. The arapaima, also called the “pirarucu,” is one of the ...

Smaller fish species are more nutritious, lower in mercury and less susceptible to overfishing, a Cornell-led research team has found. The team's study was conducted in the Amazon River, but the ...

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

A mass fish die-off in Brazil’s Amazon River region has killed an estimated 20-30 metric tons of fish and other aquatic animals, following one of the worst droughts in Amazonian history. On the night ...

In a groundbreaking expedition, researchers from Harvard and Amazonas State University began monitoring water quality and mercury contamination in the Amazon Basin’s largest tributary. The Madeira ...

It’s the longest river in the world, full of unique creatures, weaving and winding 3,700 miles across lush rainforests and ...