Best identified by the presence of five to seven teeth at one end of the inner margin of the aperture and three to four protuberances at the other. The canals are rounded rather than sharp-edged and protriuding. Specimens found in shallow water can also be recognised by general appearance, as they are oval-shaped, with a tan base and dark smudges across the shell. The species lives on the host sponge on which it feeds.

• Max Size: 9 cm
• Sea Temperature Range: 16.1-23.3°C
• Depth: 2-150 m
• Habitat: Rocky Reef

• IUCN Threat Status: Not Evaluated
• Occurrence: Frequent (12% of sites)
  Occurrence describes how often the species is found on surveys within its distribution. It is calculated as the % of reef sites surveyed by RLS divers across all the ecoregions in which the species has been observed
• Abundance: Solitary (1 per transect)
  Abundance is calculated as the average number of individuals recorded per RLS transect, where present.