Even back then, scientists were puzzled. Many prediction models suggested this fish shouldn’t survive beyond roughly 10,000 ...

For riverside communities along the Amazon, fish is not a menu choice—it is a lifeline. Millions of people in the Brazilian Amazon depend on fish as their primary source of protein, consuming it daily ...

Learn how the Amazon molly, an all-female fish that reproduces asexually, uses gene conversion to maintain healthy DNA and ...

Add Yahoo as a preferred source to see more of our stories on Google. Thousands of fish species — about 2,500 of them named — call the Amazon River home, but scientists estimate nearly half of the ...

Amazon basin fish species living in lakes, floodplain forests and river systems need a high degree of connectivity to stay genetically diverse and healthy, but this connectivity is threatened by ...

Two years of record-breaking drought have dealt a heavy blow to what is arguably the Amazon's most successful sustainable economy: the managed fishery for the giant pirarucu. In Brazil´s Amazonas ...

We explore some of the most dangerous rivers on Earth and the deadly fish that lurk beneath their surface. From massive stingrays in Southeast Asia to electric eels and bull sharks in South America, ...

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 ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. Thousands of fish ...