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Swordfish are ectothermic animals. Along with some species of sharks , they have special organs next to their eyes called heater cells which function to heat their eyes and brains. [ 13 ] Their eyes are heated to temperatures measured between 10 and 15 °C (18 and 27 °F) above the surrounding water temperature; this heating greatly improves ...
There is a dispute based on the taxonomy of the sailfish, and either one or two species have been recognized. [3] [4] No differences have been found in mtDNA, morphometrics or meristics between the two supposed species and most authorities now only recognize a single species, Istiophorus platypterus, found in warmer oceans around the world.
The main threats to this species come from pollution in the Mediterranean and bycatch capture in various fishing equipment including trawls, tuna traps, and dragnets meant for swordfish. [ 10 ] [ 12 ] All species of the genus Mobula have been targeted by recreational and commercial fisheries for centuries. [ 13 ]
Using the weight calculation formula, the swordfish measured 138 inches overall — 98 from the lower jaw to the fork of the tail — and had a girth of 64 inches. "It was a fat fish, too.
Picture Pages is a 1978–1984 American educational television program aimed at preschool children, presented by Bill Cosby—teaching lessons on basic arithmetic, geometry, word association and drawing through a series of interactive lessons that used a workbook that viewers would follow along with the lesson.
Artüz, M. Levent (January 1999). "Inventory of Existing Species and Their Habitats in the Bosphorus Area" (PDF). Marine Bio Abs.1: 112– 023. Archived from the original (PDF) on 7 June 2015.
The Chinese paddlefish (Psephurus gladius; simplified Chinese: 白鲟; traditional Chinese: 白鱘; pinyin: báixún: literal translation: "white sturgeon"), also known as the Chinese swordfish, is an extinct species of fish that was formerly native to the Yangtze and Yellow River basins in China.
Protosphyraena is a fossil genus of swordfish-like marine fish, that thrived worldwide during the Cretaceous period (Albian-Maastrichtian). Fossil remains of this taxon are mainly discovered in North America and Europe, and potential specimens are also known from Asia, Africa and Australia. [1]