Conservation efforts in the Brazilian Amazon have brought a giant fish called the arapaima back from the verge of extinction, National Geographic reported. A decade ago, the arapaima, which can grow ...
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), ...