Xanthichthys caeruleolineatus
Encyclopedia
Xanthichthys caeruleolineatus is a Triggerfish
Triggerfish
Triggerfishes are about 40 species of often brightly colored fishes of the family Balistidae. Often marked by lines and spots, they inhabit tropical and subtropical oceans throughout the world, with the greatest species richness in the Indo-Pacific...

 from the Indo-West Pacific. It occasionally makes its way into the aquarium trade. It grows to a size of 35 cm in length.
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