Also known as the paiche or the pirarucu, the arapaima is an air-breathing fish that plies the rain forest rivers of South America's Amazon Basin and nearby lakes and swamps. One of the world's largest freshwater fish, these giants can reach 9 feet (2.75 meters) long and weigh up to 440 pounds (200 kilograms). They have a wide, scaly, gray body and a tapered head.
Though arapaimas can stay underwater for 10 to 20 minutes, they tend to remain near the water's surface, where they hunt and emerge often to breathe with a distinctive coughing noise. They survive mainly on fish but are known to occasionally grab birds close to the water's surface.
The arapaima's proximity to the water's surface make it vulnerable to human predators, who can easily target them with harpoons. Some indigenous communities consume the arapaima's meat and tongue and collect its large scales, which are fashioned into jewelry and other items.
http://animals.nationalgeographic.com/animals/enlarge/arapaima-diver-megafish.html
Though arapaimas can stay underwater for 10 to 20 minutes, they tend to remain near the water's surface, where they hunt and emerge often to breathe with a distinctive coughing noise. They survive mainly on fish but are known to occasionally grab birds close to the water's surface.
The arapaima's proximity to the water's surface make it vulnerable to human predators, who can easily target them with harpoons. Some indigenous communities consume the arapaima's meat and tongue and collect its large scales, which are fashioned into jewelry and other items.
http://animals.nationalgeographic.com/animals/enlarge/arapaima-diver-megafish.html
