The bigeye thresher is a species of thresher shark, family Alopiidae, found in temperate and tropical oceans worldwide. Thresher Shark Care. They have light gray to white coloring below their pectoral fins. NEW: SWFSC Image Gallery View images of thresher sharks and more... Distribution: The thresher is distributed circumglobally in the Atlantic, Pacific and Indian Oceans and in the Mediterranean. All three thresher shark species have been listed as vulnerable to extinction by the World Conservation Union since 2007 (IUCN). SRI conducts and sponsors rigorous, peer-reviewed field research about sharks and uses science-based information to educate and advocate for shark conservation policies and protections by the world’s gov The I.G.F.A. The pelagic thresher (Alopias pelagicus) is a species of thresher shark, family Alopiidae; this group of sharks is characterized by the greatly elongated upper lobes of their caudal fins.The pelagic thresher occurs in the tropical and subtropical waters of the Indian and Pacific Oceans, usually far from shore, but occasionally entering coastal habitats. The common thresher is the largest of the three species of thresher sharks. Thresher sharks had the most specialized diet and forage on small pelagic fish. These sharks are often seen in the deep water only. [citation needed] In addition, they are hunted for their meat, livers (for shark liver oil), skin (for leather), and fins for use in shark-fin soup.citation needed] In addition, they are hunted for They feed on squid and schooling fishes, attacking after circling and herding their prey into small groups. The thresher shark is cosmopolitan throughout tropical and temperate waters. They can grow to a maximum of about 20 feet in length. NEW! You don’t find this in any other species of shark, and this is not mere aesthetics - the tail serves a very deadly purpose in hunting for prey. It has low fecundity (2-4 pups/litter) and an exceptionally low (0.002) potential annual rate of population increase, compared with other thresher sharks. With great speed, Thresher shark uses its tail like a whip to stun a school of sardines in dense clusters called bait balls.Want updates? Like other thresher sharks, nearly half its total length consists of the elongated upper lobe of the tail fin. This thresher species can be distinguished from the pelagic thresher by the white of its belly extending in a band over the bases of its pectoral fins. Its common name comes from its enormous eyes, which are placed in keyhole-shaped sockets that allow them to be rotated upward. The size is also an indication of the species. Our work aims to protect endangered pelagic thresher shark (Alopias pelagicus) in Alor Island, Indonesia through investigating the critical habitat, socio-economic importance of the species for the community and conservation outreach to local schools. (2015)). This holds true because the caudal fin grows to lengths proportionately far greater than other species of shark. There are three species of thresher sharks: the thresher shark, Alopias vulpinus; the pelagic thresher shark, Alopias pelagicus; and the bigeye thresher, described here. Sadly, like most other shark species, the number of thresher sharks in the world is declining due to over fishing for their fins and meat. Even the smallest species can grow over ten feet long, so they require very large aquariums to house them. Threshers are one of the few shark species known to jump fully out of the water, making turns like dolphins, this behaviour is called breaching. If you’re lucky, you might see this magnificent shark jump high out of the water in to the air. During the summer and autumn months, this species is regularly seen in all coastal waters of the South Island. Size limits on takes: Maximum size 150cm; or interdorsal length 60cm max. All thresher shark species have a distinctive tail with an upper caudal lobe that can be as long as their total body length; used to stun prey. We report that tails of thresher embryos have a membrane that covers the denticles and reduces surface roughness. In mature thresher tails, surfaces have an average roughness of 5.6 μm which is smoother than some other pelagic shark species, but similar in roughness to blacktip, porbeagle, and bonnethead shark … A few attacks on boats are doubtfully attributed to this species but it is otherwise apparently harmless to people, though the size of adults of this species should invite respect. Thresher Shark Facts The amazing Thresher Shark has a distinctly unique physical appearance that makes it easily recognizable. The Thresher Shark is an endangered species and remains vulnerable to extinction, especially due to its low fecundity, or frequency of reproduction. All living species of thresher shark are considered and labelled as vulnerable by the IUCN. Amazingly the Thresher Shark always gives birth to two pups, one male and one female, and how this occurs remains a mystery. Thresher sharks are found in tropical and temperate seas throughout the world. Thresher Shark. Annex 1 of the Sharks MOU lists species that have an unfavorable conservation status and which require international agreements for their conservation and management, or would significantly benefit from the international cooperation that could be achieved by an international agreement. Common length — Thresher shark:115–550cm; Common length — Bigeye thresher shark: 100–460cm. It can be hard to distinguish the species, but a color difference is common: pelagic thresher sharks tend to be blue, while the common thresher shark tends to look dark green and bigeyes tend to be brown. Possession limits on takes: 1 per person/2 per boat (with 2 or more people on board) combined limit for all shark species; Description: Thresher sharks are: Species listed on the Sharks MOU and their status on the CMS Appendices . They also have the rare ability to increase their body temperatures above that of the surrounding seawater. Thresher sharks are readily identifiable by their extremely long whip-like tails — tails as long as their bodies. Thresher sharks are Lamniformes (or mackerel sharks) whose tail fin has a greatly elongated upper lobe. Thresher sharks have short heads, cone-shaped snouts, and small mouths. 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