Acanthurus japonicus is a Tang from the Indo-West Pacific. It occasionally makes its way into the aquarium trade. It grows to a size of 21 cm in length. It is also known as Japan Surgeonfish, White-faced Surgeonfish and White-nose Surgeonfish. It is easily found in the shallow water reef area of Green Island, a famous diving site located 33 km (21 miles) away from the southeast coast of Taiwan.