[2] It often feeds by turning over rocks, stirring up sand and biting off pieces of branching coral.

Titan triggerfish are one of a number of species of fish which can hunt and eat the crown-of-thorns starfish.

[6][7] Although bites are not venomous, the strong teeth can inflict serious injury that may require medical attention.

[6][7][8][9] The threat posture includes the triggerfish facing the intruder while holding its first dorsal spine erect.

The titan triggerfish will not always bite, but can swim at snorkellers and divers escorting them out of their territory.