Brachyistius frenatus

Kelp perch
Brachyistius frenatus
Brachyistius frenatus, British Columbia, Canada, Photo: Ross Whippo
Brachyistius frenatus
Brachyistius frenatus, British Columbia, Canada, Photo: Em Lim
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Brachyistius frenatus
Brachyistius frenatus



Colour ranges from olive brown to coppery above lateral line with dark pigment beneath scales. Body is brighter beneath lateral line, and fins are pale or rosy. Cleaning behaviour (picking external parasites from larger fishes) has been documented at the southern end of its range, but not the north. 


Max Size: 22 cm

Sea Temperature Range: 6.8-21.9°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: Common (26.8% 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: Several (9 per transect)

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