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(Newly Re-described) Arapaima: Freshwater Species of the Week

An iconic freshwater fish of tropical South America, the arapaima is a massive, slender beast that can grow up to 10 feet (3 meters) long and weigh 440 pounds (200 kilograms). It is known as the pirarucu in Brazil and the paiche in the western Amazon, and is one of the largest freshwater fish in…