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 ?
In Guyana, the arapaima is legally protected against hunting and harvesting by the government, the local Rewa Amerindian tribe and operators.
Prized for its meat, the arapaima (or pirarucu), is the largest freshwater fish species in South America and one of the largest in the world.
The Eaglescliffe hotelier beamed: "I went to Thailand to catch Asian carp but had the chance of an arapaima so wanted to catch one and cross it off my bucket list.
Guyana land of many rivers which is home to the worlds largest, most powerful single drop waterfall Kaieteur Falls and as it cascades down its windy rivers, swims the worlds largest freshwater fish the Arapaima and alongside it skips the rivers surface, pink dolphins, as they see beyond their river basin banks into unspoilt dense jungle, which lurks the largest S.
Its more famous endangered creatures include the jaguar, giant river otter, giant anteater, harpy eagle, green anaconda, Guianan cock-of-the-rock, arapaima, and tapir.
His weekly quest catapults him in search of such fascinating creatures as piranha, alligator gar, wels catfish, bullshark, piraiba/candiru, and arapaima, all supposedly deadly creatures shrouded with mystery -- especially their feeding habits.
The arapaima are flourishing there, and I landed a 117lb specimen, along with a couple of other fairly large ones.
In Anangu Cocha (lagoon), the arapaima, the world's largest freshwater fish, lazily breaks the water's surface like a miniature whale.
The film follows three expert fishermen on a two-week voyage deep into the heart of Guyana's rainforest to demonstrate that the arapaima can be caught with a fly rod.
The elusive prize is the giant arapaima, but I didn't get any shots this time around.
HAVING A SPLASHING TIME Amid that flurry of water is a huge arapaima - the latest caught by Teessider Mike Ward.
London, January 5 (ANI): Reports indicate that the arapaima, a giant species of fish that lurks in the Amazon river, may be threatened by overfishing.