swordfish


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swordfish,

large food and game fish, Xiphias gladius, of the warmer Atlantic and Pacific waters. It is named for its sharp, broad, elongated upper jaw, which it uses to flail and injure its prey of smaller fish. Swordfish breed as far north as Nova Scotia; they are often seen basking on the water's surface, and their fins are sometimes mistaken for those of sharks. They may reach 15 ft (457 cm) and 1,000 lb (450 kg); however, specimens half this size are considered large. Swordfish were formerly harpooned commercially but now are taken using long lines with multiple baited hooks. Conservation efforts are underway to rebuild depleted stocks. Swordfish 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 Perciformes, family Xiphiidae.

Swordfish

 

(Xiphias gladius), the only modern representative of the family Xiphiidae of the order Perciformes. The upper jaw is extended into a swordlike projection. There are no ventral fins. The naked body is up to 4 m long and weighs up to half a ton. The swordfish is found in all oceans, primarily in the tropics; it is also encountered in arctic latitudes in the north. In the USSR the fish is found in the Black, Baltic, and Barents seas, as well as in the Sea of Japan and the Sea of Azov. Swordfish generally are solitary animals. Mating occurs in the warm season; the roe are pelagic. Swordfish feed on nektons, including squids, tuna, and sharks. They are commercially valuable.

Swordfish

[′sȯrd‚fish]
(astronomy)

swordfish

a large scombroid fish, Xiphias gladius, with a very long upper jaw: valued as a food and game fish: family Xiphiidae
References in periodicals archive ?
We had caught a swordfish during the daytime on our first attempt.
Swordfish. In: Leet WS, Dewees CM, Klingbeil R, Larson EJ, editors.
Despite the decline of west coast swordfish operations, local demand continues to exceed domestic production, a scenario that further fuels the U.S.
Second, the Saab official said that the cost of each fully integrated Swordfish can come at two thirds of that of the Poseidon or be lowered to half of it, when maintenance costs over their lifecycle is taken into consideration.
The Swordfish that took part in the attack on the giant Nazi battleship were launched from the Cammell Laird-built HMS Ark Royal, one of two aircraft carriers built at Birkenhead to bear that name.
If previous rumors are to be believed, the Swordfish smartwatch is going to be an entry-level wearable without LTE and GPS.
Caption: An MRI scan reveals that swordfish have an oil-producing organ (outlined in black) tucked just behind its rapier-like bill.
Miles way from its usual haunts in the Atlantic, Indian or Pacific Ocean, the swordfish was caught off the South Tyneside coastline when it was netted by Ian Wakenshaw aboard the fishing catamaran Beverley Ann.
Far from its usual territory in the Atlantic, Indian or Pacific Ocean this weighty swordfish was netted in North East waters along the South Tyneside coastline.
Valletta, Malta, Muharram 26, 1433, Dec 21, 2011, SPA -- Hundreds of Maltese fishermen on Wednesday marched to the offices of the island-nation's prime minister to protest plans by the European Union to reduce Malta's quota for swordfish catches, dpa reported.
Oceana also sounds the alarm over Mediterranean swordfish, catches of which are made up of 70% immature fish.
He was flying a virtually obsolete Fairey Swordfish biplane with broken radar but still managed to spot the sub which had been attacking Allied convoys to Russia and had already sunk four ships.