 The long snout of the sixgill stingray is very flexible both vertically and horizontally, suggesting that the ray uses it to probe for food in the bottom sediment. The underside of the snout is covered by well-developed ampullae of Lorenzini arranged in longitudinal rows, which are capable of detecting the minute electric fields produced by other organisms. The mouth can be protruded downward farther than the length of the head, likely allowing the ray to extract buried prey. The jaws are poorly mineralized, suggesting that it does not feed on hard-shelled animals. There is a record of a specimen with a wound from a cookiecutter shark (Isistius brasiliensis). Reproduction in the sixgill stingray is viviparous, with documented litter sizes of between two and five pups. Newly born rays measure around 48 cm (19 in) long. Both males and females mature sexually at approximately 1.1 m (3.6 ft) long.
