Bodianus diana
Dianas pigfish | Diana's Hogfish | Diana's Wrasse | Fourspot Hogfish | Indian Diana's Pigfish | Red Hogfish
Similar Species
Distribution
Temperate Australasia, Tropical Indo-Pacific
Description
Reddish colouration on head grading through yellow mid body to a pale tail, series of light yellow spots on back, black pelvic fins with white margins, red eye, black spot at centre of base of tail fin and pair of black spots on anal fin which disappear with age. Pointed snout. Juveniles red-brown with light spots on body and large black spots on fins. Pacific populations recently described as separate species, B. dictynna (Pacific Diana's Pigfish). Best distinguished on basis of location (B. dictynna Pacific Ocean only), although juveniles have slightly different spot patterns on the head. This species has more light spots on the snout and more distinct spots behind the eye, while many of the spots behind the eye of B. dictynna are fused to form elongated markings.
Information
Max Size: 25 cm
Sea Temperature Range: 23.2-31.3°C
Depth: 6-50 m
Habitat Generalization Index: 2.79
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: Least Concern
Occurrence: Infrequent (6.1% 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 (2 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