A real Amazon River monster, the Arapaima is truly one of the biggest fresh water fish today, reaching in length up to and over 9 feet, they can weigh almost 440 pounds. Arapaima are considered to be an ancient fish – scientists estimate they are descendants of fish that date back more than 250 million years. This is one of the main food fish in the Amazon. But because of over-fishing, populations in it’s natural habitat are declining, the Arapaima has been introduced into Asia.
This fish is an air-breather and lives-off of crustaceans and even small land animals that come down to the water to take a drink. Because of their size, these fish are extremely strong. If a fisherman is unlucky enough to fall overboard from his boat, with a mere sideswipe of the Arapaima’s large head, which is solid bone (pictured above), it could cause severe injury, or possibly even death.
According to Wikipedia: