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The annual take of angel shark in 1977 was an estimated 147 kg. [11] By 1985, the annual take of angel shark on the central California coast had increased to more than 454 tonnes or an estimated 90,000 sharks. [11] The population declined dramatically and is now regulated. Angel sharks live very close to shore, resulting in high bycatch rates.
Colour: Are a yellow-brown to a chocolate-brown, obtains dense patterns of small white dark edged symmetrical spots, also with many large brownish blotches. Has white nuchal spot (no ocelli).
The word squatina is the name for skate in Latin; it was made the genus name for all angel sharks by the French zoologist André Duméril in 1806. [3] Other common names used for this species include angel, angel fiddle fish, angel puffy fish, angel ray, angelfish, escat jueu, fiddle fish, monk, and monkfish. [ 4 ]
Squatiniformes is an order of sharks belonging to Squalomorphii.It contains only a single living genus Squatina, commonly known as angelsharks.The oldest genus of the order, Pseudorhina is known from the Late Jurassic of Europe. [1]
David's angelshark (Squatina david) is a species of angelshark newly described in 2016. It can grow up to around 75 cm in length and is coloured greyish to brownish yellow
S. mapama, like all Squatina (angelsharks), has a wide and flat body resembling that of rays. [1]: 114 [2]Detail of nasal flaps of the fresh holotype. Its head length ranges from 16.5% to 17.5% of its total length (TL), and its head width is about 22.2% of TL, with the maximum head width just anterior of its gill opening.
This species resembles other angel sharks in appearance, with a flattened body and greatly enlarged pectoral and pelvic fins. Characteristic features of this shark include a pair of cone-shaped barbels on its snout, angular pectoral fins, and a brown or gray dorsal coloration with many small dark markings. It attains a maximum length of 1.5 m ...
The smoothback angelshark is critically endangered. Like the sawback angelshark (Squatina aculeata) found in the same habitat, this species used to be very common.It is most threatened by the intensive fishing in coastal areas and continental shelves by drift nets, gillnets and longlines, which affects most of its range off the African coast.