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]

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 …

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

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 (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.

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 …

Arapaima are endemic to the Amazon and Essequibo river basins in South America. Their preferred habitat consists of the slow-moving, warm, and often oxygen-poor waters of floodplains, oxbow …

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 …

The arapaima, pirarucu, or paiche is any large species of bonytongue in the genus Arapaima native to the Amazon and Essequibo basins of South America. Arapaima is the type genus of the subfamily …

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 …