Carangoides ferdau
Blue Trevally | Banded Trevally | Barred Jack | Barred Trevally | Ferdau's Cavalla | Ferdau's Trevally
Similar Species
Distribution
Tropical Indo-Pacific
Description
Silvery body with seven bars from behind the head down the body (sometimes a faint 8th bar on tail base), rear bars more curved away from the head, rear margin of tail dark. Rounded body, less angular and shorter snout than in C. orthogrammus (Thicklip Trevally) which also often displays bars.
Information
Max Size: 70 cm
Sea Temperature Range: 22.6-31.2°C
Depth: 1-60m
Habitat Generalization Index: 0.58
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: Infrequent (1.9% 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: Few (4 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