Is it throughout the Atlantic coast, from the south of the United States to the province of the Chubut. It is affects coastal waters and they attract the mouths to him of the rivers. It is fed on bottom organisms, particularly crustaceans, moluscos and fish. Its body is dumpy, little tablet, with a greater curvature on the dorsal profile, with the back and flanks gray dark, clearer the ventral zone and the fins of a gray uniform, clearer that the body. Of great and robust head, provided with a blunt snout, with the slightly On guard ventral mouth; the vertical projection of its vertex reaches the later edge of the eye. Behind and underneath the mouth, in the inferior part of the head, it has a group of very evident chins that they identify it easily. All the body is covered with great grudges. It is a species that pleases of that they look for the varied fishing, reaches interesting sizes of up to 120 cm in length.