Its distinguishing feature is its pelvic fins, which are merged beneath the tail to form a continuous disc.

[3] An analysis of stomach contents conducted by Arrighetti et al. (2005) showed that the primary food item in some 90% of apron rays are the siphon tips of the bivalve Amiantis purpurata.

[1] The apron ray is caught infrequently as a by-catch of bottom trawl fisheries; it is of low commercial value and is discarded or used for fish meal.

Research trawling conducted off Buenos Aires Province and Uruguay documented an 88% decline in this species from 1994-1999.

However, the distribution of the species underwent a shift during this time, so it is unclear whether the decline could be attributed to the dramatic increase of unregulated commercial fishing in the region.