The Undulate Triggerfish (also known as the Orange-Lined Triggerfish) is a species of coral reef fish.
"This fish has a beautiful, distinctive colouration; green with orange lines. It is very timid and tends to hide in crevices if approached or exposed to light.
It raises its large dorsal fin and wedges its body inside the crevice, making it hard to get out. If it does this, there's nothing to do but wait for it to come out again."
Undulate Triggerfish are found inside the halls of the ruins of Mo'ia Atoll.
They swim around in small, loose groups. They like being offered food.
- Many players feel the Undulate Triggerfish and the Orange-Lined Triggerfish are two different species. However, the Akira staff stated that the Orange-Lined Triggerfish is simply the Undulate Triggerfish redesigned.