A mass fish die-off in Brazil ... adding strain to the families who depend on the freshwater supply. “It’s paradoxical that riverine communities in the Amazon face water stress while living ...

A new species of piranha-like fish ... freshwater fish. Researchers discovered M. sauron while studying the nearly identical species M. schomburgkii, which was first discovered in the Amazon ...

But then a giant freshwater fish arrived, known locally as paiche ... the paiche spreads another 40km (25 miles) deeper into the rivers of the Amazon basin. Federico Moreno, director of the ...

This story appears in the April 2017 issue of National Geographic magazine. Hundreds of millions of people worldwide would lack their prime source of protein without freshwater fish. Yet the lakes ...

Oscars are an aggressive and highly intelligent freshwater fish hailing from South America, specifically the tropical Amazon ...