Pale body with brown and white spots, row of double and single dark dashes along body behind pectoral fin with white spots in between, dark scale edges creating reticulated pattern on back, oblique orange marks on cheek, dark boomerang-shaped mark under eye. I. decoratus (Decorated Sandgoby) and I. rigilius (Orangespotted Sandgoby) have dark double spots or dashes that are equal to or wider than white spots. Found on sand patches near reefs. Endemic to eastern Australia.

• Max Size: 6 cm
• Sea Temperature Range: 15.5-24.6°C
• Depth: 5-7m
• Habitat: Coral Reef, Soft sediment

• IUCN Threat Status: Not Evaluated
• Occurrence: Common (40% 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: Many (11 per transect)
  Abundance is calculated as the average number of individuals recorded per RLS transect, where present.