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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.
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 ]
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.
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]
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 ...
This shark is ovoviviparous, retaining its developing embryos in its oviduct, with a litter of up to twenty young being born. Little is known of its breeding habits, but the closely related Pacific angelshark ( Squatina californica ) has a gestation period of about ten months.
A review of the systematics of western North Pacific angel sharks, genus Squatina, with redescriptions of Squatina formosa, S. japonica, and S. nebulosa (Chondrichthyes: Squatiniformes, Squatinidae). Zootaxa 1551: 31-47.
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