The Rio skate is a benthic feeder, hunting for its prey on the sea floor. Crustaceans such as shrimp are a staple part of its diet, but it also feeds on fish and polychaete worms, with its diet varying according to the abundance of prey (2). It locates its prey via a combination of smell, touch and the detection of electrical impulses (2).
Reproduction in the Rio skate takes place throughout the year, with peaks in egg laying in September and December (7). Females become reproductively active after reaching a body length of 40 centimetres and, after mating, lay pairs of eggs which are covered in a thick, leathery, brown membrane (7) (8).