Lethrinus rubrioperculatus

Spotcheek emperor
Lethrinus rubrioperculatus
Lethrinus rubrioperculatus, Barracouta Shoal, WA, Photo: Rick Stuart-Smith



Medium length snout and head profile with slight bump over the nostrils (in front of the eye). Red blotch on rear corner of operculum. Similar L. xanthochilus (Yellowlip Emperor) has red spot on pectoral base and yellow upper lip. Images of this species also seem to be frequently confused with L. amboinensis.


Max Size: 50 cm

Sea Temperature Range: 22.9-31.5°C

Depth: N/A

Habitat Generalization Index: N/A

Also referred to as the SGI (Species Generalisation Index), this describes the habitat niche breadth of the species. Species with values less than 15 are found in a relatively narrow range of reef habitat types (specialists), while those over 25 may be found on most hard substrates within their range (generalists). Learn more here.

Conservation and Rarity

IUCN Status: Not Evaluated

Occurrence: Rare (0.6% 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.