 This species feeds mainly on demersal bony fishes such as croakers and crustaceans such as crabs and shrimp; bivalves and cephalopods are also consumed.Its bands of flattened teeth allow it to crush hard-shelled prey.Curiously, two "Rhina ancylostoma" examined in a 2011 stable isotope study were found to have fed on pelagic rather than demersal animals, in contrast to previous observations.