Quick answer
The clownfish, or anemonefish, is a small, brightly colored reef fish famous for living safely among the stinging tentacles of sea anemones, protected by a special mucus coating. Made famous by the film Finding Nemo, clownfish form a partnership with their anemone that benefits both. All clownfish are born male and can change sex, and they typically live 6 to 10 years.
Key takeaway
The clownfish, or anemonefish, is a small, brightly colored reef fish famous for living safely among the stinging tentacles of sea anemones, protected by a special mucus coating. Made famous by the film Finding Nemo, clownfish form a partnership with their anemone that benefits both. All clownfish are born male and can change sex, and they typically live 6 to 10 years.
Overview
The clownfish, or anemonefish, is a small, brightly colored reef fish famous for living safely among the stinging tentacles of sea anemones, protected by a special mucus coating. Made famous by the film Finding Nemo, clownfish form a partnership with their anemone that benefits both. All clownfish are born male and can change sex, and they typically live 6 to 10 years.
Biology
Clownfish (Amphiprion ocellaris) is classified as Fish with conservation status Least Concern. Typical weight about 0.03 kg; lifespan around 6–10 years.
Ecology
Diet: Omnivore. Habitat: Coral reefs of the Indo-Pacific. Movement and social systems reflect those pressures.
People and this species
Learn before you travel or keep related pets. Wild individuals are not toys; captive care needs species-specific husbandry.
Further reading
See the full Clownfish profile for FAQs, taxonomy, and related guides on this site.
A partnership with anemones
Clownfish live among the venomous tentacles of sea anemones, which sting most other fish. A layer of special mucus on the clownfish's skin protects it from the stings, so the anemone becomes a safe home and shelter from predators. In return, the clownfish drives off intruders, cleans the anemone, and its waste helps feed it.
Born male, can change sex
All clownfish hatch as males. They live in small groups dominated by a single breeding female; if she dies, the largest male changes sex to become the new female, and the next fish in line steps up to breed. This flexible system keeps a breeding pair available within each anemone.
Reef life and diet
Clownfish rarely stray far from their host anemone. They are omnivores, feeding on algae, plankton, small crustaceans, and leftover scraps. Their bright orange-and-white pattern, bold against the anemone, warns rivals and helps members of the group recognize one another.
Conservation
Common clownfish are listed as Least Concern, but they depend entirely on healthy coral reefs and anemones. Coral bleaching from warming seas, reef destruction, and over-collection for the aquarium trade are growing concerns for some populations and the ecosystems they rely on.
Research notes
Figures for clownfishs (Amphiprion ocellaris) come from field studies, museum records, and conservation assessments that do not always agree on exact averages. Prefer ranges over single-point claims, and check whether a source describes wild, captive, or mixed populations.
Practical takeaways
If you encounter clownfishs in the wild, prioritise distance and local guidance. If you care for related domestic or captive animals, match diet and housing to species needs rather than generic pet advice. Share accurate status information (Least Concern) when discussing conservation.
Sources
FAQs
Clownfish: Key Facts & Natural History?
The clownfish, or anemonefish, is a small, brightly colored reef fish famous for living safely among the stinging tentacles of sea anemones, protected by a special mucus coating. Made famous by the film Finding Nemo, clownfish form a partnership with their anemone that benefits both. All clownfish are born male and can change sex, and they typically live 6 to 10 years.
What is the scientific name of the clownfish?
Amphiprion ocellaris
What do clownfishs eat?
Omnivore
Where do clownfishs live?
Coral reefs of the Indo-Pacific
Are clownfishs endangered?
Listed here as Least Concern. Check IUCN and national lists for the latest assessment.