Fimbriated Moray

Geographical Origin and Habitat: Tropical Indo-Pacific, from Madagascar to the Society Islands, north to southern Japan, and south to Queensland, Australia. Inhabits protected lagoons and outer reef slopes down to 45 meters.

Taxonomy and Morphology: Belongs to the family Muraenidae. Reaches 80-100 cm in length. Typical massive structure of large morays, broad mouth equipped with long, recurved needle-like teeth designed to hold slippery prey.

Social Behavior: Solitary and highly territorial. Extremely aggressive if confined in tight spaces or housed with other morays, leading to violent territorial battles.

Coloration and Sexual Dimorphism: Pale grayish-yellow or light tan body marked by irregular, jagged dark brown spots that form vertical bars. Head exhibits yellowish shades. No external sexual dimorphism.

Aquarium Setup: Requires a large aquarium, minimum 470 liters (125 gallons), set up with heavy, securely glued live rock. The moray's sudden movements can easily dislodge rocks and break glass panels.

Diet and Feeding: Voracious carnivorous predator. Offer fresh or frozen foods: fish fillets, whole shrimp, octopus, and squid. Feed with sturdy tongs to avoid accidental bites caused by the eel's poor eyesight.

Water Quality: Clean water and excellent filtration are required. pH 8.0-8.5, specific gravity 1.020-1.026, temperature 22-28°C (72-82°F). Frequent water changes to keep organic waste low.

Compatibility and Cohabitation: Reef-safe with corals but a major threat to all small fish and crustaceans. Should only be kept in large predator tanks with robust species (e.g. large lionfish, large triggerfish).

Aquarium Breeding: Breeding is impossible in home aquariums. Ocean larval stages cannot be sustained in closed artificial systems.

Risks and Diseases: Extreme escape risk: the tank must be completely sealed. Bites are deep and carry a high risk of secondary bacterial infection due to food residue between teeth.