Caesioperca rasor

Barber perch
Caesioperca rasor
Caesioperca rasor, female, Stanley, TAS, Photo: Rick Stuart-Smith
Caesioperca rasor
Caesioperca rasor, male, Port Phillip Bay, Photo: Toni Cooper
Caesioperca rasor
Caesioperca rasor, juvenile, Stanley, TAS, Photo: Rick Stuart-Smith
Caesioperca rasor
Caesioperca rasor, juvenile, Tasman Peninsula, Tas, Photo: Andrew Green
Caesioperca rasor
Caesioperca rasor, male, Melbourne, VIC, Photo: Rick Stuart-Smith
Caesioperca rasor
Caesioperca rasor, male, Melbourne, VIC, Photo: Rick Stuart-Smith
Caesioperca rasor
Caesioperca rasor, male, Charlotte Cove, Tasmania, Photo: Ian Shaw
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Caesioperca rasor
Caesioperca rasor
Caesioperca rasor
Caesioperca rasor
Caesioperca rasor
Caesioperca rasor
Caesioperca rasor

Distribution

Temperate Australasia


Description

Differs from butterfly perch in having a bar rather than a round blotch on the body in adults, a greater proportion of blue in the colouration, and a narrower body shape. Juveniles usually have a mauve head and pink body. It occurs in mixed schools with butterfly perch in some areas but generally prefers shallower and more sheltered habitats.


Information

Max Size: 25 cm

Sea Temperature Range: 10.8-20.9°C

Depth: 2-100m

Habitat Generalization Index: 8.44

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 (22.9% 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 (26 per transect)

Abundance is calculated as the average number of individuals recorded per RLS transect, where present.


Edit by: GJ Edgar. 2008. Australian Marine Life. New Holland, Sydney