Although argument remains as to the title of the world’s largest freshwater fish, the arapaima is definitely the largest ...

The U.S. Air Force studied how an Amazonian fish can survive in the same waters as schools of deadly piranha. The arapaima, a slow-moving, torpedo-shaped fish should be easy prey for a pack of the ...

The armor that a massive Amazonian fish evolved against piranhas could lead to better body armor for soldiers, researchers say. Subscribe to read this story ad-free Get unlimited access to ad-free ...