Xanthichthys mento

Xanthichthys mento is a triggerfish from the Western Pacific. It inhabits outer-reef areas at depths of 6–131 m, and feeds on zooplankton. Xanthichthys mento grows to a size of 29 cm in length and occasionally makes its way into the aquarium trade. ...
Found on http://en.wikipedia.org/wiki/Xanthichthys_mento
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