Arapaima gigas is a big fish in a bigger river full of piranhas, but that doesn't mean it's an easy meal. It's evolved armor-like scales that deform, but don't tear or crack, when a piranha ...

The giant fish Arapaima gigas is one of the most emblematic of these. Better known by the name of paiche in Peru or pirarucu in Brazil, it is one of the word’s largest freshwater fish.

Diver Alex Reeson checks on the Arapaima or Pirarucu fishes in the tropical section of Europe's biggest freshwater aquarium Aquatis, due to open October 21, in Lausanne, Switzerland. Reuters ...

Commonly known as pirarucu, arapaima (Arapaima gigas) are the largest freshwater fish in South America.They're unique among fishes for their ability to breathe air -- a feat made possible by a ...

Reaching up to 10 feet (3 meters) long and weighing 440 pounds (200 kilograms), arapaima are the largest freshwater fish in South America—and an important species in the Amazon River ecosystem.

Isaac Zimerman, 66, formerly of West Hills, plead guilty Tuesday, Nov. 10, 2015, to charges related to the illegal smuggling of Arapaima gigas fish like this one seen at the Cologne Zoo.

Isaac Zimerman, 66, used his now-defunct company, Hawthorne-based River Wonders LLC, to import a protected South American air-breathing species known as Arapaima gigas, prosecutors said. The fish ...

The arapaima (Arapaima gigas) is a freshwater fish that can grow longer than a horse and weigh up to 200 kilograms (440 pounds). The species lives in the waters that snake through the Amazon lowlands.

A new type of giant Amazonian fish — one for which only a single species was known for more than a century — has been discovered in Brazil, scientists say. IE 11 is not supported.

Arapaima gigas is a big fish in a bigger river full of piranhas, but that doesn't mean it's an easy meal. It's evolved armor-like scales that deform, but don't tear or crack, when a piranha ...