Napoleon Wrasse Identification Guide

Key identification features

• Massive, deep-bodied fish, with large adults exceeding 6 feet (2 m)
• Prominent bulging hump on the forehead, most pronounced in large individuals
• Thick, fleshy lips
• Blue-green to blue-gray coloration with fine, maze-like line patterns on the head and body
• Two dark lines running behind each eye

Common look-alikes

• Other large wrasses, such as the maori wrasse (Cheilinus fasciatus), are much smaller and lack both the forehead hump and the maze-like facial pattern.
• Humphead parrotfish (Bolbometopon muricatum) also develop a head hump but have a fused, beak-like tooth plate instead of thick separate lips, plus a duller, more uniform green color.
• Giant grouper has a bulkier, rounded body without a forehead hump and shows a mottled brown pattern rather than fine blue-green maze lines.

Where you'll see one

Napoleon wrasse inhabit coral reefs, outer reef slopes, lagoons, and channels throughout the Indo-Pacific. They are typically solitary or found in loose pairs, often lingering near caves, drop-offs, or shipwrecks rather than schooling in open water.