Moorish Idol

Moorish idol (Lazlo Ilyes / CC BY)

The Moorish idol (Zanclus comutus) is a common reef fish with a disk-shaped, compressed body. The flanks are banded black and white or yellow. The dorsal fin is prolonged into a trailing filament. The Moorish idol can reach a maximum length of about 16 centimeters (6.3 inches).

Inhabits the Indo-Pacific Ocean.

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This supplemental online resource accompanies the book Scuba Diving Hand Signals by Lars Behnke, available on Amazon.