The Napoleon wrasse (Cheilinus undulatus), also called the humphead wrasse, is one of the largest reef fish in the Indo-Pacific. Growing up to 2 meters long, it’s easily recognized by its bulging forehead, thick lips, and vibrant blue-green hues. Despite its size, this species is gentle and often curious, making it a favorite among divers and snorkelers from the Red Sea to the Great Barrier Reef. They’re commonly seen gliding over reefs or resting near coral heads, sometimes approaching divers calmly.