Saltwater Fish
Spotted Moray Eel

Species Description…

Scientific Name: Gymnothorax moringa
Common Name: Spotted Moray Eel
Species Group: Moray Eel
Habitat: Reef Safe with Caution
Care Level: Intermediate
Temperament: Predatory
Diet Type: Carnivore
Role in Aquarium: Predator
Max Fish Length: 72 (inches)
Min Aquarium Size: 100 (gallons)
Native Range: Indo-Pacific, including the Red Sea, Indonesia, and the Philippines
Gymnothorax moringa - Spotted Moray Eel

Gymnothorax moringa (Spotted Moray Eel)

Overview

  • Native to the Western Atlantic, ranging from the southeastern United States to Brazil, including the Caribbean.
  • Easily identified by its elongated, snake-like body covered in dark brown and white spots.
  • A nocturnal predator, known for ambushing prey from rocky crevices.
  • Highly adaptable and resilient, capable of thriving in a variety of marine environments.
  • Can grow up to 6 feet (1.8 meters) in length, making it one of the larger moray eel species.

Feeding

  • Carnivorous diet, primarily consuming fish, crustaceans, and cephalopods.
  • Prefers live prey but can be trained to accept frozen squid, shrimp, and silversides.
  • Best fed 2-3 times per week due to its slow metabolism.
  • Feeding tongs should be used to prevent accidental bites, as moray eels have poor vision.
  • Requires a varied diet to maintain health and avoid nutritional deficiencies.

Habitat

  • Commonly found in rocky reefs, coral formations, and seagrass beds.
  • Prefers environments with ample hiding spots such as caves and crevices.
  • Best kept in a large aquarium with strong filtration and stable water parameters.
  • Requires a secure lid, as moray eels are notorious escape artists.
  • A minimum tank size of 150 gallons is recommended due to its size and activity level.

Fish Care

  • Optimal water temperature: 74-80°F (23-27°C).
  • Ideal pH range: 8.1-8.4, with a specific gravity of 1.023-1.026.
  • Resilient to minor fluctuations but requires high-quality water conditions.
  • Should be handled with care, as it has a powerful bite and strong defensive instincts.
  • Regular tank maintenance and strong biological filtration help prevent ammonia spikes.

Compatibility

  • Best suited for predator-specific or semi-aggressive community tanks.
  • Compatible with large, robust tank mates such as groupers, lionfish, and triggers.
  • Should not be housed with small fish or crustaceans, as they may be seen as food.
  • Can be territorial, so multiple eels should only be kept in very large aquariums.
  • Generally ignores corals and invertebrates, making it reef-safe with caution.

Aquarium Behavior

  • Spends most of its time hiding in rockwork, with its head exposed.
  • Becomes more active at night, searching for food.
  • Known for its impressive yawning display, which helps regulate respiration.
  • May form bonds with aquarists who regularly feed it.
  • Thrives in an environment with plenty of shelter and minimal tank aggression.