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Fish profile · Acanthuridae

Palette surgeonfish

Paracanthurus hepatus

AquariumSaltwaterLeast Concern (IUCN)

An Indo-Pacific reef surgeonfish with a blue body, black palette-shaped marking and yellow tail. It is an active marine aquarium fish that needs ample swimming space; its tail-base spines can injure handlers.

Last reviewed 13 October 2026 · 4 sources

Photo of Palette surgeonfish
(c) Emanuele Santarelli, some rights reserved (CC BY-SA) · CC BY-SA
Max length
30.5 cm
IUCN
LC
Least Concern
Family
Acanthuridae
order Perciformes

Category from the IUCN Red List, via GBIF (CC BY 4.0); it may lag the latest Red List assessment.

How big?

Linear scale · hand 18 cm

Up to 30.5 cm.

The hand is 18 cm long.

How to identify

  • Blue sides with a black marking shaped like a painter's palette.
  • Yellow tail edged with black and a defensive spine at each side of its base.
  • Oval body is strongly flattened from side to side.

Habitat

Reefs

Coral reefs, with rock and coral shelter.

Diet
Provide marine algae and seaweed along with a varied aquarium diet.
Native range
Indo-Pacific reefs.

Aquarium care

Minimum tank
682 L
Temperature
22.2–25.6°C
pH
8.1–8.4
Temperament
Semi-aggressive

Sources

Last reviewed 13 October 2026