Orangeblotch Surgeonfish
Acanthurus olivaceus
- Least concern
- Card rarity: Common
- Fish

Acanthurus olivaceus, the orange-band surgeonfish, orange-shoulder surgeonfish or orangebar tang, is a species of marine ray-finned fish in the family Acanthuridae, the surgeonfishes, unicornfishes and tangs. It lives in the tropical waters of the Indo-Pacific.
Classification
- Class
- Actinopterygii
- Order
- Acanthuriformes
- Family
- Acanthuridae
- Genus
- Acanthurus