The Maroon clownfish

Maroon clownfish
(Premnas biaculeatus)


Maroon clownfish, also known as the spine-cheeked anemone fish or Maroon anemone fish, is a maroon color fish with white or yellow stripes. It is found in Indo Pacific Ocean. It is a hermaphrodite wherein its sex changes during its life time. The females are dominant than the males.

General Profile

Biological Name

Premnas Biaculeatus


Indonesia, Taiwan in Indo Pacific Ocean


Maroon in color with yellow or white stripes on body. Color may slightly vary based on location and sex

Body Shape

Oval shaped body


Aggressive and territorial. Cannot stay with other clownfish in the same tank except their mate.


It is relatively easier to breed Maroon Clownfish in aquariums

Social Behavior

Maroon Clownfish is an aggressive fish which usually bullies other companions if they are not her mates. It is a hermaphrodite. The fish larger in size becomes the female and the next smaller sized fish becomes male. They create a highly nested symbiotic relation with sea anemones like bubble tip anemone or carpet anemone and exhibit high level of care for their host anemone. Juveniles may be  chased away by territorial adults out of their anemones and have to find other anemones

Aquarium Level Profile

Aquarium Care Index

Medium. Suitable for beginners.

General size in Aquarium

Up to 5 inches

General Life in Aquarium

Up to 7 years. May increase with level of aquarium care.

Desired Water Temperature

76°F – 81°F

Desired Water pH levels

8.1 to 8.4

Desired Specific Gravity

1.021 – 1.025

Water Requirement

40 gallons for a single specimen, 10 gallons per additional specimen


Omnivorous. Zooplankton, algae.

Specific Disease

Marine Itch. If a disease is detected, quarantine promptly and start treatment. Avoid copper medicines when treating.

Aquarium Care Basics

Captive bred Maroon Clownfish does well in the home saltwater aquarium. It’s best to avoid keeping a wild bred clownfish.

However, a bit of community management is needed if you want to keep them in a community aquarium. Avoid keeping them with other community members with disproportionate size. They may bully the smaller companions and may be eaten up by larger companions like Lionfish or Trigger. Better to introduce all the specimens at the same time.

Always quarantine them, for at least a weak, in a separate tank before introducing them into your main tank. During this time watch out of any indications of a disease.

Maroon clownfish will accept a flexible diet. Feed them flake food or pellet food with live worms once in a while.

Avoid using a net to move maroon clownfish as its cheeks pine may get entangled. Use a container instead to move them from one tank to another.

Its also important to avoid placing Maroon clownfish with other clownfish such as the ocellaris clownfish and other breeds

Avoid sudden temperature changes as it can cause allergic effect on the fish. Keep live aquarium plants with intense light along with decent water circulation to keep nitrogen and ammonia levels in control. Change small amount of water regularly. If keeping bubble tip anemone, intense metal halide lighting will be required.

Interesting Facts

The color shades of maroon clownfish vary widely with location. There is a variant with golden stripes which usually sells for a premium among aquarium hobbyists.

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Related Articles:

How to breed Clownfish

Tomato Clownfish Care

Ocellaris Clownfish Care

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