| Clownfish | |
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| Ocellaris clownfish (Amphiprion ocellaris) | |
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Actinopterygii |
| Clade: | Percomorpha |
| (unranked): | Ovalentaria |
| Family: | Pomacentridae |
| Subfamily: | Amphiprioninae Allen, 1975 |
| Genera | |
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Clownfish or anemonefish are fishes from the subfamily Amphiprioninae in the family Pomacentridae. Thirty species of clownfish are recognized: one in the genus Premnas, while the remaining are in the genus Amphiprion. In the wild, they all form symbiotic mutualisms with sea anemones. Depending on the species, anemonefish are overall yellow, orange, or a reddish or blackish color, and many show white bars or patches. The largest can reach a length of 17 cm (6+1⁄2 in), while the smallest barely achieve 7–8 cm (2+3⁄4–3+1⁄4 in).