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Hosts of NPR's science podcast discuss new findings about long-distance fly migration, an unexpected impact of emissions in the Amazon, and fish noises. All right, it's time now for our science news ...

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 ...

MAMIRAUÁ RESERVE, Brazil — On this stretch of the Amazon River, you don't need a fish finder to locate the pirarucu, one of the world's largest freshwater fish. The splashing gives them away. Like the ...

CARAUARI, Brazil (AP) — Even in the most biodiverse rainforest of the world, the pirarucu, also known as arapaima, stands out. First, there is its mammoth size: It can weigh up to 200 kilos (440 ...

A fish larger than a man, tasty as well as beautiful, the freshwater pirarucu is a favorite with poachers in a lawless part of the Amazon jungle where Brazil, Peru and Colombia meet. Prized for its ...

Studies show that the effects of climate change can already be seen in Amazonian fish, which are growing smaller and less abundant in wetlands and streams; female fish are also reproducing at a ...

The 10-foot-long arapaima was quickly disappearing in Brazil until local communities stepped in to save it—and themselves. A close-up view of an arapaima from the Brazilian Amazon shows its unique ...