High Quality Content by WIKIPEDIA articles! The roughtail stingray (Dasyatis centroura) is a species of stingray in the family Dasyatidae, with separate populations in coastal waters of the northwestern, eastern, and southwestern Atlantic Ocean. This bottom-dwelling species typically inhabits sandy or muddy areas with patches of invertebrate cover, at a depth of 15–50 m (49–160 ft). It is seasonally migratory, overwintering in offshore waters and moving into coastal habitats for summer. The largest stingray in the Atlantic, the roughtail stingray grows up to 2.6 m (8.5 ft) across and 300 kg (660 lb) in weight. It is plain in color, with an angular, diamond-shaped pectoral fin disc and a long, whip-tail tail bearing a subtle fin fold underneath. The many thorns on its back and tail serve to distinguish it from other stingrays that share its range.