Powderblue Surgeonfish
Acanthurus leucosternon
Also known as: Blue Surgeonfish, Doctorfish, Lancetfish, Powderblue Doctorfish, Powderblue Surgeon, Powderblue Tang, Thorntail, Thorntail Fish
- Blue Surgeonfish
- Doctorfish
- Lancetfish
- Powderblue Doctorfish
- Powderblue Surgeon
- Powderblue Tang
- Thorntail
- Thorntail Fish
Overview
Found in small to large schools, over reef flats and upper seaward slopes, of clear coastal and island coral reefs.
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
- Head & Mouth
- black face
- Behaviour
- schooling
Tap any trait to see other fish that share it.
Habitat & where to find it
- Range · Indian Ocean, Western Pacific
- Exact location · 3
- Country only · 28
Found in small to large schools, over reef flats and upper seaward slopes, of clear coastal and island coral reefs.
Adult photos 31
Discussion 2
Deep dive
More in the family
Surgeonfishes-Tangs-Unicornfishes (Acanthuridae)

Blue Tang
Acanthurus coeruleus

Lined Surgeonfish
Acanthurus lineatus

Ocean Surgeonfish
Acanthurus tractus

Yellowmask Surgeonfish
Acanthurus mata

Achilles Tang
Acanthurus achilles
7 photos

Bignose Unicornfish
Naso vlamingii

Black Surgeonfish
Acanthurus gahhm
5 photos

Blue Unicorn
Naso caeruleacauda
1 photo

Blue-lined Surgeonfish
Acanthurus nigroris
1 photo

Blue-lipped Bristletooth
Ctenochaetus cyanocheilus

Bluespine Unicornfish
Naso unicornis

Brown Surgeonfish
Acanthurus nigrofuscus