Common name: Giant moray
General information
The Giant Moray (Gymnothorax javanicus) is one of the largest moray eels and a striking presence in any aquarium. It is known for its impressive size and can grow up to 3 meters in length in the wild, although in captivity they usually reach around 60 cm. Their body is elongated and muscular, with a brownish background color and a pattern of dark spots that provide camouflage among the reefs.
Details
- Recommended minimum tank volume
- 400 liter (110 gallons)
- Salinity
- S.G. 1.020 to 1.026
- Temperature
- 22 to 28 °C (72 to 82 °F)
- Acidity
- pH 7.8 to 8.4
- Average size
- 2 m (6′7″)
- Care level
- Moderate to difficult Needs hiding places
- Diet
- Carnivore Prefers live or frozen food
- Social
- Solo Territorial, best kept alone
- Reefsafe
- No May eat small fish/inverts
- Aggression
- Aggresive Can be aggressive to tankmates
- Captive bred
- No
Taxonomy
- KingdomAnimalsAnimalia
- PhylumChordatesChordata
- ClassRay-finned FishesActinopterygii
- OrderEelsAnguilliformes
- FamilyMoray EelsMuraenidae
- GenusMoray EelsGymnothorax
- SpeciesGiant morayGymnothorax javanicus (Bleeker, 1859)
- SynonymsGymnothorax javonica (Bleeker, 1859)Gymnothorax mindanoensis Borodin, 1930Lycodontis javanicus (Bleeker, 1859)Muraena javanica Bleeker, 1859
Care
Giant Morays require a large and well-structured aquarium with plenty of hiding places to feel secure. They are carnivorous and need a diet consisting of meaty foods such as fish, squid, and crustaceans. It's important to feed them with tongs to avoid accidental bites, as they have poor eyesight and a strong bite reflex. Due to their size and potential aggressiveness, they are not recommended for a community tank with small fish or invertebrates.
Reproduction
In the wild, Giant Morays reproduce by releasing eggs and sperm into the water column, where fertilization occurs. The larvae then drift in the open ocean before settling on the reef. Breeding in captivity is rare and challenging due to their large size and the difficulty in mimicking their natural spawning conditions.
Habitat
Giant Morays are found in the Indo-Pacific region, from the eastern coast of Africa to Hawaii, and from Japan to Australia. They prefer reef environments and are often seen with just their heads protruding from crevices during the day. At night, they become more active and hunt for prey.