Postcard from the Reef – Idol

The moorish idol (Zanclus cornutus) is one of the most memorable fish on a Hawaiian reef. They are commonly seen grazing along the open reef in shallow water. I often find these fish in caves as well, which seems quite odd as few daytime fish venture into the dark. The sponge and algae covered walls apparently provide good grazing.

Moorish Idol
Moorish Idol (Zanclus cornutus) in a cave

Author: Andrew

An electrical engineer, amateur astronomer, and diver, living and working on the island of Hawaiʻi.

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