Do I have to buy an anemone for my Clark's Clownfish?

No, an anemone is completely optional. Clark's Clownfish will happily live their entire lives in captivity without one. Often, they will adopt a substitute host, such as a large coral, a clump of hair algae, or even an aquarium heater.

Why is my smaller clownfish shaking or twitching in front of the larger one?

This twitching or 'seizure-like' dance is a submissive behaviour. The smaller male is demonstrating submission to the dominant female to prevent her from attacking him, maintaining harmony in the pair's hierarchy.

Can I keep a Clark's Clownfish with a common Nemo (Ocellaris Clownfish)?

It is highly recommended not to mix clownfish species. Clark's Clownfish are significantly larger and more aggressive than Ocellaris. In standard-sized aquariums, mixing them will usually result in fatal territorial battles.

How big do Clark's Clownfish get?

They are one of the larger clownfish species. Females can reach up to 15 cm (6 inches) in length, while males will stay considerably smaller.

Which anemone is the best choice for this species?

The Bubble Tip Anemone (Entacmaea quadricolor) is the most popular choice as it is relatively hardy in reef tanks and readily accepted by Clark's Clownfish. Ensure your tank has the intense lighting and maturity required to keep an anemone alive before purchasing one.

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Clark's Clownfish

Amphiprion clarkii

A remarkably hardy and beautifully striped marine fish, renowned for hosting the widest variety of sea anemones of any clownfish.

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Ideal Conditions

Temperature: 23 – 28 °C
pH range: 8.1 – 8.4
Hardness: 8 – 12 dGH
Salinity: 1.02 – 1.026 SG
Adult size: 10 – 15 cm
120L minimum for a pair: 120 litres+
Lifespan: 10 – 14 years
Diet: Omnivore
Water flow: moderate
Preferred setup: Reef or fish-only with live rock; host anemone optional.

About the Clark's Clownfish

Clark's Clownfish (*Amphiprion clarkii*) is one of the most recognisable and robust species of anemonefish in the marine hobby. Distinctive for its three thick white bars and yellowish tail, it boasts the unique ecological distinction of being able to form a symbiotic relationship with all ten species of host anemones in the wild. This widespread adaptability makes it incredibly versatile, and its bold personality ensures it becomes an instant focal point in any reef or fish-only marine aquarium.

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Is it right for your tank?

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

Where Clark's Clownfish comes from

Native range

Indo-Pacific, Persian Gulf, Great Barrier Reef, Melanesia, Micronesia

Countries / regions

Australia, Indonesia, Philippines, Japan, Vanuatu, Maldives

Habitat

Outer reef slopes and lagoons with abundant anemone populations.

Possesses the widest geographical distribution of any clownfish species.

Similar species

Two-Band Anemonefish
Amphiprion bicinctus
Sebae Clownfish
Amphiprion sebae
Allard's Clownfish
Amphiprion allardi
Tomato Clownfish
Amphiprion frenatus

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

Compatible tank mates

Reviewed guidance based on this species' recorded traits.

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Coral Beauty Angelfish
Centropyge bispinosa
Dwarf angelfish occupy different ecological niches, share similar water parameter requirements, and are robust enough to ignore the clownfish's territorial displays.
Great
Royal Gramma
Gramma loreto
A colourful, peaceful fish that claims its own distinct cave or crevice, rarely conflicting with a host-centric clownfish.
Great
Yellow Tang
Zebrasoma flavescens
Active herbivores that are far too large and fast to be bullied by a clownfish, providing movement to the upper levels of the tank.
Great
Ocellaris Clownfish
Amphiprion ocellaris
Mixing different species of clownfish usually leads to severe territorial disputes and stress unless the aquarium is exceptionally large (500L+).
Compatible with caution
Volitan Lionfish
Pterois volitans
Large predatory fish will view the clownfish as a convenient meal once they grow large enough to swallow it.
Not recommended

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