Guyana is known as the land of the giants, and the arapaima, the world’s largest freshwater fish, is one of the reasons why. The arapaima is a “gentle giant” with a suction power that is damaging to smaller fish up to four feet away. The arapaima can grow as long as 3 meters and weigh up to 440 pounds. In 2015, a monster arapaima was caught in Guyana which weighed 416 pounds!