Egghead Parrotfish (Scarus oviceps) ヒメブダイ also Darkcap Parrotfish
A male Egghead Parrotfish has a dark cap and a lighter blueish body. It looks similar to the inverse of the male Yellowbarred Parrotfish.
The female Egghead Parrotfish has a dark cape and yellow bars. It looks similar to the Yellowbarred Parrotfish.