Also known as Black Triggerfish, Bluebelly Sufflamen Trigger, Bluebelly Triggerfish, Bluethroat Trigger, Golden-finned Triggerfish, Golden-lined Triggerfish, Halfmoon Picasso Fish, Halfmoon Trigger, Halfmoon Triggerfish, Haremic Triggerfish, Whiterim Trigger, Whiterim Triggerfish, Whitetail Trigger, Whitetail Triggerfish, White-tailed Triggerfish, Whitetip Sufflamen Trigger, Whitetip Trigger, Yellowstreak Triggerfish, Yellow-backed Triggerfish.
Found singly and territorially over silty lagoons to clear outer reef walls of shallow lagoons and seaward reefs.
They feed on invertebrates.
Adults with distinctive tail fin pattern ending in a part-moon shaped white margin.
Juveniles yellow on top and white from below eye level separated by black strip.
Length - 30cm
Depth - 1-35m
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/Sufflamen-chrysopterum