They live associated with reefs at a depth of between 2 and 200 m. They feed at night on molluscs, sea urchins, hermit crabs and other crabs.

Adults are benthic and juveniles are pelagic up to 6-9 cm. Juveniles and sub-adults often form small groups.

Porcupinefish swell up when they feel threatened and spread their barbs all over their bodies.

Conservation status