Muraena helena

Datasheet

General Description

The Mediterranean moray (Muraena helena) is a species of moray eel belonging to the Muraenidae family. These predatory fish primarily feed on fish and crustaceans. With a maximum size reaching up to 150.0cm, they are known for their aggressive behavior towards similar species and their ability to pose a threat to larger fish and smaller crustaceans.

Aquarium Suitability

The Mediterranean moray, despite its hardiness, demands special aquarium conditions. They require a very large tank, with a minimum size of 1500 liters, due to their escape artist tendencies and aggressive nature. They can be a threat to peaceful or docile species, and caution must be taken when selecting tank mates. These eels are cool-water inhabitants, thriving in temperatures between 18-24°C (64-75°F).

Care and Hardiness

This species is hardy but requires careful consideration in terms of feeding frequency. They should be fed a substantial meal every 3-4 days to prevent overeating and potential harm. It is advised to offer a varied diet of raw/fresh foods like whole shrimps or small fish. Morays can take time to acclimate to aquarium feeding and may require live food initially.

Reef Suitability

Mediterranean morays are considered reef-safe with caution. They need ample hiding spots within the rocks and substrate of the tank to mimic their natural habitat. These eels have a tendency to rearrange rocks and sand, requiring secure placement to prevent toppling.

Aquarium Setup

Setting up an aquarium for Mediterranean morays involves ensuring a large tank with secure closures to prevent escapes. Providing hiding places like live rocks is essential, along with a well-anchored substrate. Due to their aggressive behavior, selecting tank mates carefully and monitoring interactions is crucial.

Behaviour

Known for their aggressive temperament towards similar species, Mediterranean morays should not be housed with peaceful fish or docile creatures. They have the capability to rearrange tank decor and are escape specialists, necessitating a tightly sealed aquarium.

Feeding and Diet

Feeding these eels a varied diet of fish and larger crustaceans like shrimp and crabs is essential. Overeating can be harmful, so a feeding schedule of a substantial meal every few days is recommended. If they refuse frozen foods, offering live fish or shrimp can entice their appetite.

Habitat and Distribution

In their natural habitat of the Mediterranean Sea, Mediterranean morays inhabit cool waters and rocky crevices. They require environments with ample rock formations and hiding spots to feel secure. Their ability to lift lids and move objects emphasizes the need for secure tank closures when kept in captivity.