Lactoria fornasini

Thorny-back boxfish
Lactoria fornasini
Lactoria fornasini, adult, Bali, Indonesia, Photo: Ian Shaw
Lactoria fornasini
Lactoria fornasini, Port Stephens, NSW, Photo: Nicola Davis
Lactoria fornasini
Lactoria fornasini, adult, North Solitary Island, NSW, Australia, Photo: Ian Shaw
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Lactoria fornasini
Lactoria fornasini
Lactoria fornasini


Temperate Africa, Tropical Indo-Pacific


Coloured green to brown with random blue dots and dashes. Has a pair of forward projecting spines over the eyes, another pair projecting rearward from the rear of the body under the caudal peduncle, and a single spine in the centre of the dorsal surface.


Max Size: 23 cm

Sea Temperature Range: 15.9-30.9°C

Depth: 5-132 m

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: Rare (0.8% 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.