Fimbriated Moray

Overview

The Fimbriated Moray (Gymnothorax fimbriatus) is a medium-sized, reef-associated eel widely distributed throughout the tropical Indo-Pacific. Often found in protected inshore waters, this species is typically solitary and nocturnal, spending daylight hours sheltered within rocky crevices or coral structures.

Appearance

This eel features a serpentine body with a pale cream, tan, or greyish-brown background, covered in a variable pattern of irregular black spots. Its head is distinctively greenish-yellow with smaller black dots and characteristic white markings at the corners of the mouth. The snout is tapered, and the body exhibits a slight thickening behind the head. Like other morays, it lacks pectoral and pelvic fins, possessing a continuous dorsal fin that runs the length of its body.

Distribution & habitat

It is found across the Indo-Pacific, ranging from Madagascar to the Society Islands and from southern Japan to Queensland, Australia. It inhabits a variety of environments, including lagoons, reef flats, seaward reefs, and harbors, often favoring areas with dead coral or small caves for protection.

Biology & behavior

Primarily active at night, the Fimbriated Moray leaves its lair to hunt. It is generally shy and will typically retreat if approached. Like other morays, it frequently opens and closes its mouth; this is a respiratory action to facilitate water flow over its gills rather than a sign of aggression. It is considered harmless to humans, though it may bite if threatened.

Feeding

As a carnivore, its diet consists mainly of small fish and crustaceans. It relies on a keen sense of smell to locate prey in the dark.