Scorpis violacea

Blue mao mao | Blue Sweep | Hardbelly | Violet Sweep | Scorpis violaceus
Scorpis violacea
Scorpis violacea, Poor Knights Islands, New Zealand, Photo: Andrew Green
Scorpis violacea
Scorpis violacea, juvenile, Poor Knights Is, New Zealand, Photo: Andrew Green
Scorpis violacea
Scorpis violacea, Lord Howe Is, NSW, Photo: Andrew Green
1 / 3
Scorpis violacea
Scorpis violacea
Scorpis violacea


Temperate Australasia


Silvery with blue-violet sheen with a dark lateral line. Juveniles with yellow anal fin. Distinguished from temperate Australian S. lineolata (Silver Sweep) by colour, lack of dark upper and lower edges of tail and black pectoral base spot.


Max Size: 35 cm

Sea Temperature Range: 14.3-24.8°C

Depth: 0-30m

Habitat Generalization Index: 11.97

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: Common (37.8% 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: Large aggregations (105 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