Monday, 23 April 2012

Almaco jack/Highfin jack

 
Name
Almaco jack (Seriola rivoliana) is a game fish of the family Carangidae, also known as Highfin Jack. They are in the same family as yellowtail and amberjack.

Location
Admiralty Is, Amer Samoa, Andaman Is, Anguilla, Antigua Barb, Argentina, Aruba, Australia, Azores Is, Bahamas, Bangladesh, Barbados, Belize, Bermuda, Br Virgin Is, Brazil, Cambodia, Caroline I., Cayman Is, Chagos Is, China Main, Colombia, Cook Is, Costa Rica, Cuba, Curaçao I., Djibouti, Dominica, Dominican Rp, Ecuador, El Salvador, Fiji, Fr Guiana, Galapagos Is, Greece, Grenada, Guadeloupe, Guam, Guatemala, Guyana, Haiti, Hawaii, Honduras, India, Indonesia, Iran, Italy, Jamaica, Japan, Kenya, Kermadec Is, Kiribati, Korea Rep, Lord Howe I., Madeira Is, Malaysia, Maldives, Marquesas Is, Marshall Is, Martinique, Mauritius, Mexico, Micronesia, Montserrat, Mozambique, Myanmar, N Marianas, New Caledonia, New Zealand, Nicaragua, Norfolk I., Ogasawara Is, Oman, Palau, Panama, Papua N Guin, Peru, Philippines, Portugal, Puerto Rico, Reunion, Ryukyu Is, Saint Lucia, Samoa, Singapore, Solomon Is, Somalia, South Africa, Spain, Sri Lanka, St Kitts Nev, St Vincent, Suriname, Tahiti, Taiwan, Tanzania, Thailand, Tokelau, Tonga, Trindade Island, Trinidad Tob, Tuvalu, Uruguay, US Virgin Is, USA, Vanuatu, Venezuela, Viet Nam, Wake I., Wallis Fut I.

Habitat
The Almaco jack is a pelagic species that can be found in small groups on slopes and off of reefs at depths from 5 to 160 metres (2.7 to 87 fathoms) They typically swim at depths ranging from 5–35 metres (16–115 ft). They visit wrecks more often than most other jacks. They remove skin-based parasites by rubbing against the rough skin of passing sharks. Almaco jack also rub against passing scuba divers because they mistake them for sharks.

Appearance
The Almaco jack has a less elongated, more flattened body than most jack species. Their dorsal fin and anal fins are elongated, and their outer edges have a definite sickle shape. The first rays of the Almaco dorsal fin's longest parts are nearly twice as long as the dorsal spines, also different from other jacks. Almaco jacks are generally dusky-colored with faint amber or olive stripes down their sides. Their upper bodies and lower fins are usually dark brown or dark blue-green. The belly is much lighter and appears brassy or lavender. The nuchal bar and most of the fins is dark on adults. Exceptions are the pelvic fins which are white on the ventral sides.

Diet
Boops boops, called the bogue. longspine snipefish, bellowfish, common bellowsfish, snipe-fish, spine trumpet fish, or trumpetfish. striped red mullet. porgies. Swallowtail seaperch. European pilchard. chub mackerel. Axillary wrasse. blue jack mackerel.

Method of Catching
Vertical Jigging, Artificial Lures, Live bait.

Edible
Almaco jack can cause a disease in humans called ciguatera through bioaccumulation of ciguatoxin produced by a microscopic organism called dinoflagellate. The flesh is thick and dense like tuna and can easily pass for white albacore if prepared as sushi.

Spawning ground/Season
They reach a typical length of 90 centimetres (35 in), sometimes reaching 160 centimetres (63 in) and 59.9 kilograms (132 lb). Spawning can occur at various times throughout the spring, summer and fall depending on latitude.


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