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A large South American freshwater food fish (Arapaima gigas) that can attain a length of up to 3 meters (10 feet). Also called pirarucu.

[American Spanish or Portuguese, both probably of Tupian origin.]


(Animals) a very large primitive freshwater teleost fish, Arapaima gigas, that occurs in tropical South America and can attain a length of 4.5 m (15 ft) and a weight of 200 kg (440 lbs): family Osteoglossidae
[via Portuguese from Tupi]
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Some of the aquatic creatures at the exhibition were multi-coloured Parrotfish, the mud crab, the Red Pacu, the Arapaima gigas fish, the catfish, the Mickey Mouse platy fish and the lobster.
So far, he has only found one specimen of Arapaima gigas.
So, until further field surveys of appropriate areas are completed, we will not know if Arapaima gigas is extinct or still swimming about," he added.