The bigeye thresher sharks eyes are well adapted to hunting prey in low light conditions. The teeth are moderately large with a single, narrow cusp. Bigeye threshers are usually found over the continental shelf and in the open sea, though they are occasionally encountered in shallow coastal waters. In the Mediterranean, they are strongly associated with schools of frigate mackerel (The bigeye thresher has a very wide distribution, appearing in oceans across the world. Known food items include schooling forage fish such as mackerel and herring, benthic fishes such as hake and whiting, larger pelagic fishes such as lancetfish and small billfish, squid such as lycoteuthids and ommastrephids, and possibly crab megalopae. The meat is marketed fresh, smoked, or dried and salted, though it is not highly regarded due to its mushy texture.

There is no defined breeding season and most adult females are pregnant throughout the year without any apparent lag time between pregnancies. WHAT TO LOOK FOR Long curving, upper tail lobe nearly as long as the rest of the shark. Bigeye thresher shark (Alopias superciliosus) a tail like a whip to stun prey. Bigeye threshers are usually found over the continental shelf and in the open sea, though they are occasionally encountered in shallow coastal waters. The pups are born very large, usually over 1.3 m, but it takes them about ten years to become sexually mature. In the western Atlantic Ocean, it has been reported from New York to Florida, the Bahamas, Cuba, Venezuela, Tobago and southern Brazil. The bigeye thresher is a large shark of the Alopiidae family. Other language common names are alopias megalomatos (Greek), coleto (Spanish), coludo cebucano (Spanish), grootoog-sambokhaai (Afrikaans), grootoogvoshaai (Dutch), großäugiger drescherhai (German), hachiware (Japanese), jarjur (Arabic), karibiankettuh… It is also occasionally caught in shark nets around beaches in South Africa. The large pectoral fins have a curved anterior margin and broad tips. Each eye is taller than wide, with a bulbous upper portion. There are three species of thresher sharks: the thresher shark, Alopias vulpinus; the pelagic thresher shark, Alopias pelagicus; and the bigeye thresher, described here. Analysis of mitochondrial DNA has shown that Atlantic and Indo-Pacific populations are somewhat genetically divergent from each other.

The orbits extend onto the dorsal surface of the head, allowing the eyes to orient upwards. The snout is moderately long and bulbous, and there are no labial furrows at the corners of the mouth. The bigeye thresher spends the day in very deep waters, and moves up to the surface at night to feed. Distinguishable from the two other species of thresher sharks, the pelagic and the common thresher, by its namesake – a pair of extremely large eyes used to detect prey in low light. This colour rapidly fades to a dull gray after death. [from 1880s] This color rapidly fades to a dull gray after death. Along with the other thresher species, the bigeye thresher is listed as a game fish by the International Game Fish Association (IGFA), and is pursued by recreational anglers off the United States, South Africa, and New Zealand. Do you think they survived? This species is or was taken by longline fisheries operated by many countries, including the United States, Japan, Spain, Brazil, Uruguay, and Mexico, and constitutes about 10% of the pelagic shark catch. This species is or was taken by longline fisheries operated by many countries, including the United States, Japan, Spain, Brazil, Uruguay, and Mexico, and constitutes about 10% of the pelagic shark catch. Our new @LIFEprogramme project #ELIFE aims … In the waters of the United States, this species is considered a nuisance bycatch of longlines, gillnets, and trawls. Little is known of their geographical movements; one individual has been documented moving from New York to the Gulf of Mexico, a straight-line distance of 2,767 km (1,719 mi). There are 19–24 teeth in the upper jaw and 20–24 teeth in the lower jaw; their shapes are similar in both jaws. These items include schooling fishsuch as mackerel and herring, benthicfishes such as hake and whiting, larger pelagic fishes such as lancetfish and small billfish, as well as other animals such as squid such as lycoteuthids and ommastrephids and possibly crab megalopae. The bigeye thresher is a very important component of the Cuban longline fishery, and has recently been taken in considerable numbers by longliners off the northeastern USA. The bigeye thresher comprises 20% of the longline catch off Cuba, where it is attracted at night using cyalume sticks (chemical lights). Most bigeye threshers are 3.3–4.0 m (10.8–13.1 ft) long and weigh 160 kg (350 lb). Its main prey are squid and fish, which it stuns by using its tail as a whip. Take your favorite fandoms with you and never miss a beat. Most bigeye threshers are 3.3–4.0 m (10.8–13.1 ft) long and weigh 160 kg (350 lb). Chondrichthyes Wiki is a FANDOM Lifestyle Community.Take your favorite fandoms with you and never miss a beat.

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