Common name: Brown moray

Scientific name: Gymnothorax vicinus (Castelnau, 1855)

General information

The Green Moray Eel (Gymnothorax vicinus) is a large and charismatic species that is popular among advanced marine aquarium hobbyists. Despite its common name, the Green Moray's skin is actually a dark blue or brownish color; the green appearance is due to a yellow mucus that covers its body, which may have antibacterial properties. This species can grow to an impressive size, often reaching lengths of up to 2.5 meters in the wild.

Details

Recommended minimum tank volume
300 liter (79 gallons)
Salinity
S.G. 1.020 to 1.026
Temperature
22 to 26 °C (72 to 79 °F)
Acidity
pH 7.8 to 8.4
Average size
75 cm (2′6″)
Care level
Moderate to difficult Needs hiding spots & careful feeding
Diet
Carnivore Prefers live or frozen foods
Social
Solo Territorial, best kept alone
Reefsafe
No May eat small fish & inverts
Aggression
Aggresive Can be aggressive, especially when hungry
Captive bred
No

Taxonomy

  1. Kingdom
    Animals
    Animalia
  2. Phylum
    Chordates
    Chordata
  3. Class
    Ray-finned Fishes
    Actinopterygii
  4. Order
    Eels
    Anguilliformes
  5. Family
    Moray Eels
    Muraenidae
  6. Genus
    Moray Eels
    Gymnothorax
  7. Species
    Brown moray
    Gymnothorax vicinus (Castelnau, 1855)
  8. Synonyms
    Gymnothorax cyanopunctatus Howell Rivero, 1932
    Gymnothorax obscuratus Poey, 1870
    Gymnothorax versipunctatus Poey, 1876
    Gymnothorax virescens Poey, 1876
    Leptocephalus forsstromi Strömman, 1896
    Lycodontis vicinus (Castelnau, 1855)
    Murenophis vicina Castelnau, 1855
    Thyrsoidea cormura Kaup, 1859

Care

Caring for a Green Moray Eel requires a spacious aquarium with a tightly sealed lid to prevent escape. They are powerful and can dislodge poorly secured equipment or rockwork. The tank should include plenty of hiding places and be equipped with a robust filtration system to handle the significant amount of waste they produce. They are carnivorous and should be fed a varied diet of fresh or frozen seafood.

Reproduction

Reproduction of Green Moray Eels in home aquariums is extremely rare. In the wild, they are oviparous, with females releasing large amounts of eggs that are fertilized externally by the male. The larvae are pelagic and drift in the open ocean before settling to the reef.

Habitat

Green Moray Eels are found in the Western Atlantic Ocean, from New Jersey, USA, to Brazil, including the Gulf of Mexico and the Caribbean Sea. They prefer reef environments and are often found in crevices and caves at depths ranging from shallow waters to about 30 meters.