Description

Also known as Blueline Triggerfish, Bluestripe Triggerfish, Goldback Triggerfish, Goldenback Trigger, Goldenback Triggerfish, Outrigger Triggerfish.

Found singly, or in schools, over outer reef slopes, and deep seaward reefs.
They feed on zooplankton.
Length - 35cm
Depth - 15-200m
Widespread Indo-West Pacific

Triggerfish have a hard spine Dorsal Fin that can be locked.
When sleeping this spine is used to wedge them into place in a crevasse and so deter predators from pulling them out of their bed!
The spine is also held erect as a warning to other fish to stay away.
Several large Titans blow shallow depressions in the sand for nesting and if approached will raise this spine as a warning, if ignored they may charge, even divers! especially the Titan Triggerfish who will take a tasty bite!! Beware!!! Ref: https://www.fishbase.se/summary/Xanthichthys-caeruleolineatus