Clown tang

Acanthurus lineatus

Also known as Lined Surgeonfish, Clown Surgeonfish, Blue-lined Surgeonfish, Pyjama Tang

SaltwaterFish

Care at a glance

Temperature
75–81°F
24–27°C
pH
8.1–8.4
Adult size
15 in
38 cm
Minimum tank
238 gal
900 L
Temperament
Aggressive
Own kind
One per tank
Tankmates
With caution
Diet
Herbivore
Difficulty
Difficult
Breeding
No record
Rarity
Common
Reef safe
Reef safe
Family
Acanthuridae
Origin
Indo-Pacific from East Africa to the central Pacific, on shallow surge-swept reef crests and flats.

Overview

The clown tang is a demanding surgeonfish for a very large reef tank. Only experienced keepers should try it.

Did you know

Clown tangs ship and acclimate poorly, so a healthy long-term specimen is a real sign of a well-run tank.

Caring for the clown tang

Give a clown tang at least 238 gal (900 L), with strong flow, high oxygen and long swimming runs. Adults are constantly on the move.

Keep the water pristine at 75 to 81°F (24 to 27°C) and a pH of 8.1 to 8.4. This tang is prone to ich, and to stress if crowded.

Offer constant grazing food such as nori, spirulina and macroalgae, and feed it heavily. It is reef safe with corals, but it may nip large-polyp stony corals if underfed.

The clown tang is one of the more aggressive members of its genus and bullies most tank mates. It is highly aggressive to similar fish, so keep it as the only tang. Add it to the tank last.

Good to know

Acanthurus lineatus carries a notably large tail blade that is associated with venom. Its blue and orange stripes are among the boldest of any surgeonfish.

In the wild

Clown tangs range across the Indo-Pacific, from East Africa to the central Pacific. They live on the shallowest, most turbulent part of the reef crest, where they fiercely defend a grazing territory.

Common questions

What size tank does a clown tang need?

A clown tang needs at least 238 gal (900 L). It spends most of its time in the middle.

What temperature and pH does a clown tang need?

A clown tang is comfortable at 75–81°F (24–27°C) with a pH of 8.1–8.4.

What does a clown tang eat?

A clown tang eats nori, spirulina and macroalgae. It needs constant grazing food and heavy feeding.

How big does a clown tang get?

An adult clown tang reaches about 15 in (38 cm).

Related species