The cardinal tetra is one of the most popular pet fish in the world. They look like little red and blue sequins. You've ...

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

For riverside communities along the Amazon, fish is not a menu choice—it is a lifeline. Millions of people in the Brazilian ...

The construction of the Balbina hydroelectric dam in the Brazilian Amazon led to the loss of seven endemic fish species in the Uatumã River, researchers have found. The hydroelectric dam has ...

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 ...

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 ...

Researchers discovered a new species dwelling at the bottom of a river in the Amazon rainforest, according to a new study. Image from the Journal of Fish Biology A rare new species of fish was ...

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 ...