Muraenidae

Giant moray

Gymnothorax javanicus

Three meters of leopard spots inside reef holes

• Black
• Brown
• Gray
• Tropical
• Globally widespread
• Marine fish
• Anguilliform
• Large
• Tropical fish

Ruling the labyrinthine caverns of Indo-Pacific coral barriers as the undisputed heavyweight of all moray eels, the giant moray commands respect for its massive bulk and apex predatory authority. Its massive, muscular body displays a heavy, broad head with an imposing fleshy dorsal crest that begins above the gill openings and extends continuously into the tail. The background coloration is a rich yellowish-brown densely mottled with large, irregular dark leopard-like spots that become smaller and more numerous with age, while the circular gill aperture is set within a diagnostic, prominent dark black blotch. Distributed from the Red Sea and South Africa across the tropical Pacific to Hawaii and Pitcairn, it establishes permanent dens within outer reef drop-offs, caves, and coral channels from one to fifty meters depth. An apex nocturnal ambush predator, it feeds on reef teleosts, octopuses, and small sharks. Famous for exhibiting cooperative interspecific hunting partnerships with coral groupers, this formidable apex predator attains maximum recorded lengths of three hundred centimetres and body masses exceeding thirty kilograms.

Sources: Australian Museum — Giant Moray, Gymnothorax javanicus