Moorish Idol

Superpower

A long trailing dorsal streamer and bold bands make it one of the reef's most elegant fish.

At a glance

Size

typically 16 cm, up to 23 cm

Lifespan

5–10 years

Depth

1–180 m

Habitat

Coral and rocky reefs.

Diet

Sponges and small invertebrates picked from crevices.

Can I eat it?

No — this one is not eaten.

Fun facts

• •The 'Gill' character in Finding Nemo is a Moorish idol.
• •Its trailing dorsal fin filament is called a banner.
• •It is famously difficult to keep alive in home aquariums.