IUCN threat status:

Near Threatened (NT)

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Biology

Little is known about the big skate's mating behaviour but, like other skates, it is oviparous, or egg-laying, but it has unusually large egg capsules that contain up to seven eggs. Among skates, only the big skate and the closely related Raja pulchra have more than one egg per egg capsule. The egg capsules of the big skate are laid in pairs and usually contain three to four eggs, although up to seven have been recorded. Hatchlings are released from the egg capsule about nine months after being laid by the female. Males reach sexual maturity at approximately seven to eight years, females at 12 to 13 (4). The big skate feeds on marine invertebrates such as shrimps, worms and clams, as well as on crustaceans and fish (3) (4). The positioning of the mouth on the underside of the body is perfect for sucking up animals hiding in the sand.

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Source: ARKive

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