Orangeband Surgeonfish
Acanthurus olivaceus
Also known as: Doctorfish, Lancetfish, Olive Surgeonfish, Orangeband Tang, Orange-banded Surgeonfish, Orangebar Surgeonfish, Orangebar Tang, Orangeblotch Surgeon, Orangeblotch Surgeonfish, Orangeblotch Tang, Orange-ear Surgeonfish, Orange-epaulette Surgeonfish, Orange-epaulette Tang, Orangeshoulder Surgeonfish, Orangeshoulder Tang, Orange-shouldered Surgeonfish, Orange-shouldered Tang, Orangespot Surgeonfish, Orangespot Tang, Thorntail, Thorntail Fish
- Doctorfish
- Lancetfish
- Olive Surgeonfish
- Orangeband Tang
- Orange-banded Surgeonfish
- Orangebar Surgeonfish
- Orangebar Tang
- Orangeblotch Surgeon
- Orangeblotch Surgeonfish
- Orangeblotch Tang
- Orange-ear Surgeonfish
- Orange-epaulette Surgeonfish
- Orange-epaulette Tang
- Orangeshoulder Surgeonfish
- Orangeshoulder Tang
- Orange-shouldered Surgeonfish
- Orange-shouldered Tang
- Orangespot Surgeonfish
- Orangespot Tang
- Thorntail
- Thorntail Fish
Overview
Found singly or in small schools, in areas of mixed bare rock, rubble, and sand, over seaward reefs, rich in algae growth.
Juveniles all yellow, found singly or in schools, over protected bays and lagoons.
Widespread East Indo-Pacific
Surgeonfish have a blade like spine in the tail that points outwards when bent, unicorns have two hook-like plates along the tail, these are used for defence and are as sharp as a surgeons scalpel, hence the name "Surgeonfish".
Some species are venomous.
How to identify
Tap any trait to see other fish that share it.
Habitat & where to find it
- Range · Central Pacific
- Exact location · 3
- Dive site · 3
- Country only · 13
Found singly or in small schools, in areas of mixed bare rock, rubble, and sand, over seaward reefs, rich in algae growth.
Adult photos 19
Discussion 2
Deep dive
More in the family
Surgeonfishes-Tangs-Unicornfishes (Acanthuridae)

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Brown Surgeonfish
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Fine-lined Surgeonfish
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Humpnose Unicornfish
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