Acanthurus chirurgus

Acanthurus chirurgus, is commonly simply known as the doctorfish. This is a quite uncommon fish in the trade. Becoming a medium-large surgeonfish, it needs plenty of swimming space and clean water to thrive. It can be aggressive towards other fish, especially other tangs and food competitors, but will make up for that with eating algae once hierarchy is established.

Like other tangs, it will eat meaty foods, but it's important it can graze on algae/seaweed the entire day to ensure it will stay healthy. So feed flakes/pellets multiple times a day and make sure there is always seaweed available.