Lethrinus laticaudis

Lethrinidae
Grass Emperor, Blue-lined Emperor, Blue-spotted Emperor, Brown Morwong, Grass Sweet-lip
  • Lethrinus laticaudis, Gulf of Carpentaria, Australia, Photo: Graham Edgar
    Lethrinus laticaudis, Gulf of Carpentaria, Australia, Photo: Graham Edgar
  • Lethrinus laticaudis, Photo: Rick Stuart-Smith
    Lethrinus laticaudis, Photo: Rick Stuart-Smith
  • Lethrinus laticaudis, Photo: Rick Stuart-smith
    Lethrinus laticaudis, Photo: Rick Stuart-smith
  • Lethrinus laticaudis, Dugong Is, Great Barrier Reef, QLD, Photo: Andrew Green
    Lethrinus laticaudis, Dugong Is, Great Barrier Reef, QLD, Photo: Andrew Green
Distribution
Tropical Indo-Pacific
Description
High body with a steep and slightly concave upper head profile, blue lines radiating from each eye across forehead, and blue spots on cheek. Able to 'turn on' brown mottling pattern for camouflage. Head profile and spots on face best distinguish it from the more common L. nebulosus (Spangled Emperor).
Information
  • Max Size: 56 cm
  • Sea Temperature Range: 19.9-31.6°C
  • Depth: 5-35m
  • Habitat: Coral Reef, Mangrove, Seagrass
  • Habitat Generalisation Index: 3.6
    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
Rarity
  • IUCN Threat Status: Not Evaluated
  • Occurrence: Infrequent (4% 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: Few (3 per transect)
    Abundance is calculated as the average number of individuals recorded per RLS transect, where present.
Edit by: RD Stuart-Smith, GJ Edgar, AJ Green, IV Shaw. 2015. Tropical Marine Fishes of Australia. Reed New Holland
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