Coryphaenoides rupestris is a species of marine ray-finned fish in the family Macrouridae. Its common names include the rock grenadier, the roundnose grenadier and the roundhead rat-tail. In France it is known as grenadier de roche and in Spain as granadero de roca. It is a large, deep-water species and is fished commercially in the northern Atlantic Ocean. Description The roundnose grenadier is a deep water fish sometimes reaching over a metre (yard) in length. The rounded head is large with a broad snout, the abdomen small and the tail long and tapering to a pointed tip. At the front of the snout there is a blunt, tube-like scute or scale and there is a small barbel under the chin. There are three rows of small teeth at the front of the mouth but only one row at the back. The scales on the body are densely packed and covered with small spines. The dorsal fin has two spines and 8 to 11 soft rays and the pelvic fin has 7 to 8 soft rays, the outer one of which is greatly elongated. The general body colour is brownish-grey but the inside of the mouth, the orbits round the eyes, the gill cavities and the fins are dark brownish black. Distribution The roundnose grenadier is found in the northern Atlantic Ocean at depths between 400 and 1,200 m (1,300 and 3,900 ft) and occasionally at much greater depths. It tends to spend the summer in deep waters and the winter in shallower locations. Its range normally extends from Baffin Island, Greenland, Iceland and Norway south to the New England Seamounts and North Africa. It is found on continental shelves and in the vicinity of seamounts and knolls.
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