from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. A large South American freshwater food fish (Arapaima gigas) that typically attains a length of 3 meters (10 feet). Also called pirarucu.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A large carnivorous predatory South American tropical freshwater fish, Arapaima gigas. It is the largest scaled freshwater fish in the world. It is a primitive fish.

from the GNU version of the Collaborative International Dictionary of English

  • n. A large fresh-water food fish of South America.

from The Century Dictionary and Cyclopedia

  • n. The name of the largest known fresh-water fish, Arapaima gigas, an inhabitant of Brazil and Guiana, said to attain a length of 15 feet and a weight of 400 pounds. It is of economical importance as a food-fish.
  • n. [capitalized] [NL.] A genus of malacopterygian abdominal fishes, of the family Osteoglossidœ, remarkable for their size and the mosaic work of their hard bony compound scales. A. gigas is an example.


from The American Heritage® Dictionary of the English Language, 4th Edition

American Spanish or Portuguese, both probably of Tupian origin .


  • Apparently at 15 feet in length, the arapaima is the largest fish in the Amazon.

    January « 2005 « I HEART BACON

  • The arapaima is the largest freshwater fish with scales in the world.

    BBC News | News Front Page | UK Edition

  • The site protects the largest array of electric fish in the world and key threatened species such as the giant arapaima fish, Amazonian manatee, black caiman and two species of river dolphin.

    Central Amazonian Conservation Complex, Brazil

  • Visitors walk through a series of geographical-themed displays that cover a range of aquatic species, from frogs in the "Highlands" display to the "Amazon Flooded Forest" section where there's a rare South American freshwater fish, a three-meter-long arapaima.

    Finding Nemo

  • Equally daunting is the prospect of moving a six-foot-long arapaima, a fish able to leap as high as three feet out of water.

    Moving 38,000 Living Specimens Creates

  • Some very huge arapaima also, which are air breathing fish that grow up to fourteen feet.

    Cool things at the Dallas World Aquarium | Letter Never Sent

  • When we walked into the Amazon Gallery, the arapaima stopped me dead in my tracks.

    January « 2005 « I HEART BACON

  • "Presently, one kilogram of arapaima fish sells for 30 Brazilian reais (US$ 17) at the market, and up to 50 reais (US$ 28.5) in supermarkets," she says.


  • According to Keyla, demand for the arapaima (Arapaima gigas), which is also known as pirarucu, or paiche has increased even further after it was in danger of extinction, leading to the establishment, by the Brazilian Environment and Renewable Natural Resource Institute


  • "The proposal is to strengthen arapaima fishing in the region, as it was mostly made for local consumption thus far," explains the project manager of the Sebrae Pará, Keyla Reis de Oliveira.



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  • It's the largest freshwater fish in the world, but somehow it is unlisted!

    April 14, 2012