Arapaima is the type genus of the subfamily Arapaiminae within the family Osteoglossidae. [1][2][3] They are among the world's largest freshwater fish, reaching as much as 3 m (9.8 ft) in length. [2]

Oct 30, 2024 · A keystone species of the Amazon River ecosystem, the arapaima is a powerful predator known by many names.

The arapaima, Arapaima gigas (Arapaimidae), is among the largest known freshwater fish species with sizes up to 14 feet and 440 pounds. They have a streamlined, oval shape with a large, flattened head.

The Arapaima are several species of colossal freshwater fish from South America. They’ve likely been around, almost unchanged, since before the dinosaur extinction, and could have grown to even …

The arapaima is a massive yet sleek, streamlined freshwater fish native to the streams of the Amazon River basin. It can breathe air, allowing it to survive in pools with low water levels or decaying …

Aug 14, 2025 · The Arapaima (also known as the pirarucu or paiche) is an enormous freshwater fish found in the tropical waters of South America. It is one of the largest known freshwater fish and can …

The Arapaima (Arapaima gigas, though recent research suggests multiple species exist within the genus) is one of the largest freshwater fish on Earth, regularly reaching lengths of over 6.5 feet (2 …

Over millennia, arapaima have developed the ability to breathe air using a modified swim bladder that acts as a lung. This allows them to survive in oxygen-deficient, murky waters during seasonal …

The Arapaima, also known as pirarucu or paiche, is a true titan of the Amazon Basin—and one of the largest freshwater fish species on Earth. These ancient, air-breathing predators can grow over 8 feet …

Also known as the paiche or the pirarucu, the arapaima is an air-breathing fish that plies the rainforest rivers of South America's Amazon Basin and nearby lakes and swamps.