arapaima


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arapaima

(ăr'əpī`mə), tropical fish, genus Arapaima, of the Amazon basin. Arapaimas are perhaps the largest of the strictly freshwater fishes, reportedly reaching a length of 15 ft (4.5 m), but averaging 7 to 8 ft (2–2.4 m) in length and 200 lb (90 kg) in weight. The dorsal and anal fins of the arapaimas are placed so far back that they appear to be part of the tail fin, giving a massive appearance to the posterior region. The scales are olive-green, turning increasingly reddish in the tail region and becoming crimson near the tail fin. The swim bladderswim bladder,
large, thin-walled sac in some fishes that may function in several ways, e.g., as a buoyant float, a sound producer and receptor, and a respiratory organ. The swim bladder, or air bladder, is located in the dorsal portion of the body cavity and is filled with gases.
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 is open to the pharynx; it is rich in blood vessels and serves as a lung. Arapaimas use the fins to hollow out a nest in clear, shallow, sandy-bottomed areas. They are graceful swimmers despite their bulk, and they are valued as an aquarium fish as well as for food. Arapaimas are classified in the phylum ChordataChordata
, phylum of animals having a notochord, or dorsal stiffening rod, as the chief internal skeletal support at some stage of their development. Most chordates are vertebrates (animals with backbones), but the phylum also includes some small marine invertebrate animals.
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, subphylum Vertebrata, class Actinopterygii, order Osteoglossiformes, family Arapaimidae.
References in periodicals archive ?
The experiment was conducted at the Fish Technology Laboratory, Technology and Innovation Coordination-COTI, National Institute for Amazonian Research (INPA), where the procedures for obtaining acid silage made of Arapaima gigas pirarucu waste were developed (Schinz, 1822) as well its physical and chemical characterization; and at the Poultry Sector, Department of Animal and Plant Productionl (DPAV), Faculty of Agricultural Sciences (FCA), Federal University of Amazonas (UFAM), located in the Southern Sector of the University Campus, Manaus, state of Amazonas, Brazil, where the digestibility assay was performed.
2010) UVA/ UVB-induced genotoxicity and lesion repair in Colossoma macropomum and Arapaima gigas Amazonian fish.
2010), Sorubim cuspicaudus (CABARCAS, 2008; CABARCAS & BURBANO, 2008) y sugerir estrategias de conservacion de Arapaima gigas (HRBEK et al.
Stewart (on the right) hooked and landed this massive, 150lb arapaima, whose home isn't in Thailand but the River Amazon.
For The arapaima: One 12-ounce piece arapaima tail 1 cup granulated sugar 1/2 cup fine sea salt (preferably Peruvian) For the huito crunch: 2 large hullo, * peeled and halved 4 orange airampo, ** peeled For the cocona sauce: 2 cups darn stock.
A giant freshwater fish, the arapaima, native to the Amazon river in Brazil, can breathe air and has armour-like scales so strong it can withstand piranha attacks.
Mr Townson, who travels the world catching exotic fish, said: "The Arapaima are protected and cannot be removed by law for the table, but our partners in Guyana are working on strictly catch-and-release with the local Amerindians.
Teesside's Tricia Tolley caught a stunning arapaima on her first fishing trip to Thailand - and promptly joined it in the water.
The arapaima or pirarucu [both Web3] is a large South American food fish.