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Thousands of fish species — about 2,500 of them named — call the Amazon River home, but scientists estimate nearly half of the marine creatures lurking in the massive stretch of water remain ...

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 ...

Measuring 10 feet (3 meters) long and weighing in at more than 400 pounds (180 kilograms), it's hard to imagine that the arapaima, the largest fish in the Amazon River basin, could ever go missing.

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 ...

Piranhas are among the most deadly creatures in the water, with razor-sharp teeth capable of slicing flesh easily, but a fish in the Amazon River basin has developed a "bulletproof vest" to protect ...

WASHINGTON, Oct 16 (Reuters) - One of the world's largest freshwater fish is protected by the natural equivalent of a "bullet-proof vest," helping it thrive in the dangerous waters of the Amazon River ...

Researchers discover that overexploited fish are long-distance seed dispersers. The giant tambaqui (Colossoma macropomum) in Manaus Fish Market, Brazil. Photo by: Thorke Østergaard. A fruit in the ...