Yellowmargin Triggerfish (Pseudobalistes flavimarginatus) キヘリモンガラ size 50cm
A small Yellowmargin Triggerfish.
An adult Yellowmargin Triggerfish. They are one of the larger triggerfish getting over 50 cm.
They have been known to attack when guarding their nests. I have not seen this yet.
I think that this is a juvenile Yellowmargin Triggerfish. I am not sure because it is very similar the juvenile Titan Triggerfish. I am getting some conflicting information about the difference between them.