Ocellaris Clownfish
Amphiprion ocellaris
The Ocellaris Clownfish, also known as the Common Clownfish or False Percula Clownfish, is one of the most popular and instantly recognisable fish in marine aquariums. Its brilliant orange body, three distinctive white bands edged in black and charming swimming behaviour make it a favourite among reef keepers of all experience levels.
Native to the tropical reefs of the Indo-Pacific, this species is famous for its remarkable relationship with sea anemones. In the wild, clownfish seek shelter among their tentacles, gaining protection from predators while benefiting their host. In captivity, however, an anemone is not essential. Many clownfish happily establish a territory around rockwork or another sheltered area.
Ocellaris Clownfish are particularly fascinating when kept as a compatible pair. They develop a strong social bond, with the larger, dominant individual becoming female and the smaller remaining male. Their interactions, gentle hovering movements and occasional territorial displays make them endlessly interesting to observe.
Generally peaceful, adaptable and easy to feed, this species is an excellent choice for both fish-only and reef aquariums. With proper care, Ocellaris Clownfish can thrive for many years, becoming familiar and engaging residents of the aquarium.
Feeding Notes
Ocellaris Clownfish are omnivores that readily accept a wide variety of prepared aquarium foods. Provide a balanced diet of high-quality marine pellets or flakes, supplemented with frozen mysis, enriched brine shrimp and other suitable marine foods.
Include some algae-based nutrition, such as marine foods containing spirulina, to provide a well-rounded diet.
Feed small portions once or twice daily, offering only what the fish can consume within a few minutes. Smaller juveniles may benefit from more frequent, appropriately sized meals.
Aquarium Setup Notes
Provide a stable, fully cycled marine aquarium of at least 60 litres with suitable rockwork, sheltered areas and sufficient swimming space. Larger aquariums are recommended when keeping clownfish alongside other marine species.
Ocellaris Clownfish are adaptable to different aquarium environments and can be kept successfully in both fish-only and reef systems. They tolerate a variety of water movement conditions but should have access to areas sheltered from strong, direct currents.
A host anemone is not required for their health or wellbeing. Although clownfish naturally associate with anemones in the wild, captive individuals may instead establish a territory around rockwork or occasionally adopt corals as alternative hosts.
If keeping an anemone, ensure the aquarium is mature and that its lighting, water movement and water quality meet the anemone's more demanding requirements.
Compatibility Notes
Ocellaris Clownfish are generally peaceful towards other marine fish, making them suitable for many community reef aquariums. Compatible tankmates may include gobies, blennies, cardinalfish, peaceful wrasses and other non-aggressive species.
They are best maintained singly or as a compatible pair. Two juveniles can often establish a natural pair, with the larger, dominant fish eventually becoming female.
Although relatively peaceful, established clownfish can become territorial, particularly around their chosen shelter or during breeding. Avoid introducing multiple unrelated clownfish into smaller aquariums, as aggression and bullying may develop.
Reef safe: Ocellaris Clownfish do not normally prey on corals or ornamental reef invertebrates. However, individuals may adopt fleshy corals such as Euphyllia as alternative hosts, and persistent contact can sometimes irritate or damage sensitive coral tissue.
Monitor interactions carefully, particularly when keeping clownfish with delicate or newly introduced corals.