What Divers Should Know About
Napoleonfish

Encountering a Napoleonfish is often a highlight for divers exploring the Indo-Pacific's vibrant coral reefs. This impressive fish, also known as the Humphead Wrasse, stands out immediately as the largest member of the wrasse family. Mature males can grow to an impressive 229 centimeters (90 inches) and weigh up to 191 kilograms (421 pounds), though most individuals encountered are closer to 60 centimeters. Look for its distinctive thick lips, two black lines trailing behind its eyes, and the prominent hump on the forehead of larger adults. Their coloration varies from olive-green to vibrant purplish-blue, often with unique yellow undulating patterns on the head.

These majestic fish are typically found navigating the outer-reef slopes, channels, and lagoons of healthy coral reef ecosystems, often between depths of 2 and 60 meters. While generally observed singly, it's not uncommon to spot male-female pairs or small groups cruising along the reef edge. These long-lived individuals, known to reach ages of around 30 years, are opportunistic predators, playing a significant role in maintaining reef balance by consuming various invertebrates.