Do Ocellaris Clownfish need an anemone?

No. An anemone is a natural behaviour, not a requirement, and it adds significant lighting and stability demands. Many captive-bred clownfish host in a coral instead.

What size tank do Ocellaris Clownfish need?

100 litres is a practical minimum for a pair in a stable reef system.

Can you keep two clownfish together?

Yes, as a bonded pair of the same species raised together. Adding a second adult to an established fish usually ends in fighting.

Are Ocellaris Clownfish reef safe?

Yes. They do not eat corals, although a pair may irritate a coral they adopt as a host.

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Ocellaris Clownfish

Amphiprion ocellaris

The best-known marine aquarium fish: hardy, captive bred in large numbers and full of character in a mature reef tank.

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Ideal Conditions

Temperature: 24 – 27 °C
pH range: 8.1 – 8.4
Salinity: 1.023 – 1.026 SG
Adult size: 7 – 9 cm
Min. tank size: 100 litres+
Lifespan: 6 – 15 years
Diet: Omnivore
Water flow: Moderate
Preferred setup: Mature reef aquarium with live rock and a host anemone or coral

About the Ocellaris Clownfish

Amphiprion ocellaris is a small, robust damselfish from Indo-Pacific reefs. Captive-bred stock is widely available, accepts prepared food immediately and adapts well to aquarium life, which makes it the usual first fish for a new reef aquarium — after the system itself is mature and stable.

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Is it right for your tank?

Check Ocellaris Clownfish against a habitat you already keep. We compare water type, temperature, pH, adult size, group needs and everything living there.

Where Ocellaris Clownfish comes from

Native range

Indo-Pacific coral reefs, Eastern Indian Ocean, Western Pacific

Countries / regions

Indonesia, Philippines, Malaysia, Australia

Habitat

Sheltered lagoons and coastal reef slopes to about 15 m, always associated with a host anemone.

Illustrative native range only, not an occurrence dataset.

Similar species

Percula Clownfish
Amphiprion percula
Clarkii Clownfish
Amphiprion clarkii
Royal Gramma
Gramma loreto

We’re adding more full species guides as the catalogue grows.

Compatible tank mates

Reviewed guidance based on this species' recorded traits.

View all compatibility

Royal Gramma
Gramma loreto
Occupies rockwork rather than the clownfish's host, and shares the same reef parameters.
Great
Firefish Goby
Nemateleotris magnifica
Peaceful, keeps to its own burrow and is ignored away from the host.
Great
Six Line Wrasse
Pseudocheilinus hexataenia
Reef safe and parameter-matched, but can become a persistent bully in smaller tanks.
Compatible with caution
Maroon Clownfish
Premnas biaculeatus
Larger, far more aggressive clownfish that will attack an Ocellaris over host territory.
Not recommended
Koi
Cyprinus carpio
Coldwater pond fish — no shared environment with a tropical marine species.
Not recommended

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