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The sailfish is one of two species of marine fish in the genus Istiophorus, which belong to the family Istiophoridae . They are predominantly blue to gray in colour and have a characteristically large dorsal fin known as the sail , which often stretches the entire length of the back.
It is theorized by marine biologists that the 'sail' (dorsal fin array) of the sailfish may serve the purpose of a cooling and heating system for this fish; this due to a network of a large number of blood vessels found in the sail and because of "sail-raising" behaviour exhibited by the sailfish at or near the surface waters after or before ...
The Atlantic sailfish (Istiophorus albicans) is a species of marine fish in the family Istiophoridae of the order Istiophoriformes. It is found in the Atlantic Ocean and the Caribbean Sea , except for large areas of the central North Atlantic and the central South Atlantic , from the surface to depths of 200 m (656 ft).
Indo-Pacific sailfish: Among the fastesr sprinters are the Indo-Pacific sailfish (left) and the black marlin (right). Both have been recorded in a burst at over 110 kilometres per hour (68 mph). For the sailfish, that is equivalent to 12 to 15 times their own length per second. Shortfin mako
Indo-Pacific sailfish. Istiophorus platypterus: Thalapath (තලපත්) Black marlin: Istiompax indica: Kalu kopparaa (කලු කොප්පරා) Striped marlin. Kajikia audax: Iri kopparaa (ඉරි කොප්පරා) Atlantic blue marlin. Makaira nigricans: Nil koppara (නිල් කොප්පරා)
An amateur fossil hunter has uncovered a piece of animal vomit which dates back 66 million years on a beach in Denmark.
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The Indo-Pacific sailfish has a prominent dorsal fin. Like scombroids and other billfish, they streamline themselves by retracting their dorsal fins into a groove in their body when they swim. [59] The huge dorsal fin, or sail, of the sailfish is kept retracted most of the time.