Overview
The Reticulated Moray (Muraena retifera) is a striking, boldly patterned moray eel native to the coral reefs and rocky hardbottom ledges of the western Atlantic Ocean. Adorned with a dazzling mesh of dark net-like reticulations and bright golden-yellow rosettes, this nocturnal predator is famous for its razor-sharp recurved teeth, powerful pharyngeal jaws, and stealthy hunting prowess along reef crevices.
Biology and Physical Characteristics
Muraena retifera possesses a muscular, laterally compressed serpentine body lacking pectoral and pelvic fins, with a continuous dorsal fin that merges seamlessly with the caudal and anal fins. Its body coloration is among the most intricate of all Atlantic eels: a warm caramel or pale chocolate-brown background overlaid with an exquisite network of dark brown to black polygonal reticulations, enclosing clusters of bright creamy-yellow to white spots. The gill openings are dramatically marked with bold black patches. Its jaws are lined with needle-sharp, backwards-pointing teeth, augmented by a specialized set of toothed ‘pharyngeal jaws’ in the throat that shoot forward to seize prey and pull it down the esophagus.
Behavior and Ecology
Reticulated Morays are primarily solitary, nocturnal ambush hunters that spend daylight hours tucked securely inside limestone caves, sponge hollows, or coral crevices, rhythmically opening and closing their mouths to pump oxygenated water across their internal gills. At nightfall, they slither through reef contours, using exceptionally acute olfactory organs to track octopuses, spiny lobsters, and sleeping fishes in complete darkness. Their thick, scaleless skin is coated with a toxic mucus layer that shields them from parasites and abrasions against sharp coral rubble.
Conservation and Human Impact
Widespread across the subtropical and tropical western Atlantic, the Reticulated Moray is categorized as Least Concern. While not targeted by commercial food fisheries due to risks of ciguatera fish poisoning in large individuals, they are occasionally taken for the marine aquarium trade or caught as incidental bycatch on hook-and-line bottom gear. Healthy coral reef management and Marine Protected Areas across Florida and the Caribbean support robust populations.
Interesting Factoid
Like the xenomorph creature from the movie Alien, this eel possesses a second set of jaws inside its throat—called pharyngeal jaws—that physically shoot forward into its mouth to bite down on struggling prey and drag it down its throat.
Last updated: October 2026