Balistoides viridescens, Raja Ampat, Indonesia, Photo: Graham Edgar
Balistoides viridescens, Bali, Indonesia, Photo: Ian Shaw
Greyish body with light scale margins forming a crosshatch pattern, dark ‘moustache’ behind mouth, separating light chin from yellow cheek, white tail base and yellow rear tail with a black rear margin. Aggressive when nesting in coral rubble, confronting divers ferociously.
Max Size: 75 cm
Sea Temperature Range: 22.4-31.7°C
Habitat: Coral Reef
Habitat Generalisation Index: 7.4
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
IUCN Threat Status: Not Evaluated
Occurrence: Infrequent (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: Solitary (1 per transect)
Abundance is calculated as the average number of individuals recorded per RLS transect, where present.