Common name: Oenone fulgida

General Information

Oenone fulgida is a predatory marine polychaete worm commonly found in tropical and subtropical waters. Its slender body and distinctive, vibrant coloration make it a notable species for marine enthusiasts, although it is rarely kept in home aquariums due to its specific dietary habits. This worm is often found in coral reefs, sandy substrates, and rocky areas, where it plays a predatory role within the ecosystem.

Oenone fulgida is known for its preference for mollusks, especially snails and (giant) clams. Its feeding behavior involves secreting digestive enzymes to dissolve the soft tissues of its prey, which can make it problematic for reef tanks containing mollusks. Due to this, hobbyists are advised to avoid keeping Oenone fulgida in mixed species tanks, particularly those with valuable mollusks.

Care

Caring for Oenone fulgida in a marine aquarium requires a well-established tank with hiding places among live rock and coral. Stable water conditions with moderate water flow are necessary to replicate its natural environment. However, due to its predatory nature, it is not typically recommended for reef aquariums containing mollusks or other slow-moving invertebrates.

Handling should be avoided as these worms can secrete irritating substances, and they should be closely monitored in a controlled setting to prevent them from attacking tank mates like clams and snails.

Diet and Feeding

Oenone fulgida is primarily a carnivore, preying on a range of mollusks including snails and clams. In captivity, it may target Tridacna clams or other sessile invertebrates. It can be offered small pieces of mollusk flesh or marine invertebrates, but care must be taken to prevent overfeeding or the worm preying on valued tank inhabitants.

Behavior and Compatibility

Oenone fulgida is generally solitary and highly predatory. It poses a risk to mollusks and should not be kept in reef tanks with sensitive invertebrates like snails or clams. Its ability to dissolve soft tissue makes it unsuitable for mixed-species aquariums unless care is taken to separate it from vulnerable tank mates.

Habitat

Oenone fulgida is native to the warm waters of the Indo-Pacific region and can often be found in coral reefs, sandy areas, and rocky crevices. Its natural habitat offers plenty of opportunities to hunt for mollusks, which form the majority of its diet. In captivity, replicating stable temperatures and salinity will help ensure its health, but its diet and compatibility with other species require careful attention.