Ocellaris clownfish

Amphiprion ocellaris

Quick reference

Min tank size

20 US gal

20 gal min — they grow to 3 inches and want space to claim a territory. 10 gal works for a juvenile but limiting long-term.

Min tank length

24 in

Length matters more than gallons for active swimmers.

Temperature

75–82 °F

Salinity

1.024–1.026 SG

8.0–8.4

Pellet, frozen mysis, brine shrimp. 1–2 small feedings daily. Voracious — easy to overfeed.

Peaceful. Don't mix ocellaris with other clownfish species — they will fight to death. Pair OK only if bonded.

Ich during cycling. Aggression from other clown species. Brooklynella (wild-collected only — captive-bred essentially clear).

•Buying two adults — they may not pair, may fight to death.
•Buying wild-caught — captive-bred (ORA, Sustainable Aquatics) are healthier and don't deplete reefs.
•Expecting anemone hosting — most captive ocellaris never host.

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Frozen PE Mysis is the staple. TDO pellets for daily feedings. Selcon-soaked food prevents HLLE in herbivores.

PE Mysis Shrimp — frozen

Whole-shrimp frozen food. Premium reef-tank standard.

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TDO Chroma Boost pellets

Best fish pellet for color enhancement. Multiple sizes.

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Selcon (American Marine)

HUFA + vitamin soak for frozen food. Critical for tang health.

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Last reviewed 2026-05-25