Maroon Clown

• Vibrant orange or maroon colored fish with striking white stripes.

• Form a symbiotic relationship with anemones, living amongst their stinging tentacles for protection.

• Territorial and require a large tank (over 40 gallons) with tank mates chosen carefully.

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SKU: 5022

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The Fiery Resident: Maroon Clownfish

The Maroon Clownfish, also known as the Spine-Cheeked Anemonefish (Premnas biaculeatus), is a captivating saltwater fish prized for its vibrant color and interesting social behavior. Let’s dive into the details of caring for this fiery resident of your reef tank.

Scientific Name: Premnas biaculeatus

Water Quality: Pristine water conditions are essential for Maroon Clowns. Aim for stable temperatures between 72°F-78°F (22-26°C), with a specific gravity of 1.020-1.025 and moderate water flow. Regularly test and maintain these parameters.

pH Level: A slightly alkaline pH between 8.1 and 8.4 is ideal for these fish.

GH & KH Level: Maintain a moderate hardness range. Aim for a general hardness (GH) of 8-12 dKH and a carbonate hardness (KH) of 8-12 dKH.

Feeding: Maroon Clownfish are omnivores. Provide a varied diet of high-quality meaty foods like chopped frozen brine and mysis shrimp, along with algae-based flakes and pellets to ensure proper nutrition.

Tank Mates: With a territorial temperament, Maroon Clowns are best kept singly or as a mated pair. Avoid housing them with other clownfish species or overly aggressive tank mates. Peaceful invertebrates like cleaner shrimp or crabs can be good companions.

Substrates & Decorations: A deep (2-inch) bed of crushed coral or sand is preferred for burrowing. Provide ample hiding places with live rock and coral formations.

Suitable Plants: Maroon Clownfish are not dependent on plants, but hardy coral species like bubble tip anemones (their natural anemone hosts), along with leather corals and zoanthids, can be added for a colorful reef environment.

Sexing & Breeding: Maroon Clowns are sequential hermaphrodites, with the largest fish being the female and the next largest being the breeding male. Breeding can occur in captivity, but it requires a mature mated pair and specific tank setups.

Maximum Size & Longevity: These are the largest clownfish species, reaching up to 6.7 inches (17 cm) in length. With proper care, they can live for over 20 years in a well-maintained aquarium.

Behavior: Maroon Clowns form a symbiotic relationship with their host anemone, using its stinging tentacles for protection from predators while the clownfish keeps the anemone clean. They are also quite territorial, especially towards their own kind.

Things to Consider Before Buying:

  • Tank Size: Maroon Clowns require a minimum tank size of 40 gallons, but a larger tank (60 gallons or more) is recommended to provide enough space for their territorial behavior.
  • Experience Level: These fish are not ideal for beginners due to their specific water quality needs and aggressive tendencies.
  • Anemone Compatibility: If you plan to house them with an anemone, ensure it’s a compatible species like the bubble tip anemone and is healthy before introducing the clownfish.

General Information: Maroon Clownfish are native to the Indo-Pacific region, including the Great Barrier Reef.

Fun Fact: Maroon Clownfish can change sex! If the female dies, the largest remaining male will change into a female to maintain the breeding pair.


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Care Level


Potential of Hydrogen

pH Level Aquarium pH measures water acidity/alkalinity. 7 is neutral. Fish have pH preferences; maintain ideal levels for their health and stability.

8.1 – 8.4

General Hardness

GH Level GH (General Hardness) in aquariums measures minerals like calcium and magnesium. It affects fish health by showing water\'s mineral content.

8 – 12 dGH

Carbonate Hardness

KH Level KH (Carbonate Hardness) in an aquarium stabilizes pH. It acts like a shield, keeping the water conditions just right for fish.

8 – 12 dKH


Temperature Ideal temperature needed for fish

22°C – 26°C

How long will I live

Life Span

20+ Years

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