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 keystone species of the Amazon River ecosystem, the arapaima is a powerful predator known by many names. Mike Bock Reaching up to 10 feet (3 meters) long and weighing 440 pounds (200 kilograms), ...

The Burmese python, green iguana and lionfish are, by now, well-known invasive species that have established a dangerous foothold in Florida. But a fearsome new invasive predator has emerged in the ...

Researchers working in the murky waters of the Amazon River in Brazil have discovered a new species of giant fish. The arapaima is an air-breathing fish that ranges between six and seven feet in ...

Arapaima gigas is a big fish in a bigger river full of piranhas, but that doesn't mean it's an easy meal. The freshwater giant has evolved armor-like scales that can deform, but do not tear or crack, ...

If you liked this story, share it with other people. In February, Florida officials identified the body of an arapaima (Arapaima gigas) that had washed ashore from the Caloosahatchee River. An expert ...

A villager from the Rumao Island community holds a young arapaima before releasing it back to the wild.Reuters Villagers from the Rumao Island community paddle their canoes loaded with ...

Zoo staff said that the fish were about 17 years old, which is the typical life span of captive arapaima. According to the press release, a necropsy carried out after the death of the fish initially ...