The snaggletooth shark, or fossil shark, is a species of weasel shark. It is found in the Indo-West Pacific, including the Red Sea, from southeast Africa to the Philippines, north to China, and south to Australia, at depths from 1 to 130 metres (3 to 425 ft). This shark can be found near the bottom of the water column of coastal areas, but can be found at continental and insular shelves. Its length is up to 240 cm (7.87 ft). Despite being only vulnerable to extinction, this shark is very rarely seen.

The snaggletooth's coloration is light grey or bronze with no prominent markings. As its name suggests, it has sharp, serrated teeth on the upper jaw and hooked teeth on the bottom jaw. The shape of its body is tapered at both ends, allowing it greater speed in the water. It preys on a variety of different animals, including bony fish, other sharks, rays, crabs, and cephalopods.

This shark is usually caught by fishing trawlers (a type of fishing boat), or by gill nets. Its fins are used in the shark fin soup trade in China and other Asian countries. The meat is sold for consumption, the liver is used as a source for vitamins and the rest of the carcass is processed into fish meal.

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