Thornback ray Profile

The Thornback ray (Platyrhinoidis triseriata) is a species of cartilaginous fish characterized by its distinctive top side, which is covered with numerous thorny spines and exhibits a brownish or greyish color with darker spots, allowing it to blend into sandy or muddy sea floors. This ray is native to the coastal waters of the eastern Pacific, ranging from California, USA, to Baja California, Mexico. It has a round, flat body that is typical of rays, with a relatively short tail compared to other species. The Thornback ray is not widely known in the aquarium hobby due to its size, specific habitat needs, and the challenge of providing an appropriate environment for it in captivity.