Raja asterias, commonly known as the Starry Ray, is a species of skate found in the northeastern Atlantic Ocean. It is a relatively large skate, with a maximum recorded size of 75.0 cm. Raja asterias is a bottom-dwelling fish, typically inhabiting depths ranging from the surface to 700.0 meters. This depth range places them in a variety of marine zones, from the epipelagic zone down to the bathypelagic zone.
Description & Characteristics
Raja asterias is distinguished by its distinctive star-shaped pattern of dark spots and blotches on its dorsal side. These markings are often bordered by a light-colored ring, giving the fish a characteristic “starry” appearance. The body is flattened, with large pectoral fins that extend around the head, giving it a distinctive disc-like shape. The underside of the skate is a pale white, with a series of gill slits on the ventral side. Its tail is relatively short and tapers towards the tip. The eyes are located on the dorsal side of the head, and the mouth is positioned on the underside. Like all skates, it possesses sharp, pointed teeth adapted for crushing and grinding prey.
Habitat and Occurrence
Raja asterias is found throughout the northeastern Atlantic Ocean, ranging from Iceland and Norway in the north to Morocco and the Mediterranean Sea in the south. This widespread distribution reflects their adaptability to a range of marine environments, from shallow coastal waters to the deep ocean floor.
Taxonomy
Raja asterias belongs to the Class: Elasmobranchii, Order: Rajiformes, and Family: Rajidae. The Class Elasmobranchii encompasses sharks, rays, and skates, all of which are characterized by their cartilaginous skeletons. The Order Rajiformes specifically includes skates and rays, while the Family Rajidae includes all true skates, which are distinguished by their flattened bodies, large pectoral fins, and the presence of two dorsal fins.
Feeding
Raja asterias is a carnivorous fish, feeding primarily on a variety of bottom-dwelling invertebrates, including crustaceans, mollusks, and worms. Their powerful jaws and teeth allow them to crush and grind these hard-bodied prey items. They hunt by lying in wait on the seabed, using their keen sense of smell and electroreception to detect prey.
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