Clownfish Identification Guide

Clownfish (subfamily Amphiprioninae) are among the easiest reef fish to recognize, but telling the species apart takes a closer look at their white bars and body color.

Key identification features

• Oval, laterally compressed body with rounded fins.
• Bright base color — orange, reddish, black, or brown depending on species.
• White vertical bars, typically one to three, often edged in black.
• Almost always found nestled in a sea anemone, a behavior no other similar fish shares.

Telling the common species apart

• Ocellaris Clownfish: orange with three white bars, thin black bar outlines — the classic 'Nemo'.
• Percula Clownfish: very similar but with thicker black outlines around the bars.
• Tomato Clownfish: reddish with a single white head bar.
• Maroon Clownfish: deep maroon with narrow white or yellowish bars, the largest species.

Where you'll see one

Clownfish live on warm Indo-Pacific coral reefs, always closely associated with host anemones. The bright body, bold white bars, and anemone home together confirm the identification.