Common name: brown margin glossodoris

General information

Glossodoris rufomarginata, commonly known as the Red-Margined Glossodoris, is a striking species of nudibranch, a group of soft-bodied, marine gastropod mollusks. This species is known for its elegant white body adorned with a vibrant red margin that runs along the edge of its mantle. Nudibranchs like Glossodoris rufomarginata are often referred to as 'sea slugs' due to their slug-like appearance, but they are highly appreciated in the marine aquarium hobby for their unique beauty and role in the ecosystem.

Care

Caring for Glossodoris rufomarginata requires a well-established reef aquarium with stable water conditions and low to moderate water flow. They feed exclusively on certain types of sponges, so it's crucial to ensure that their specific dietary needs are met. Due to their specialized diet, they are considered challenging to keep in captivity and are recommended for experienced aquarists who can provide the necessary food sources.

Reproduction

Like many nudibranchs, Glossodoris rufomarginata is a hermaphrodite, possessing both male and female reproductive organs. They can engage in reciprocal mating, where both individuals exchange sperm to fertilize their eggs. The eggs are laid in a spiral ribbon and will hatch into free-swimming larvae before settling down and metamorphosing into their adult form.

Habitat

Glossodoris rufomarginata is typically found in the tropical Indo-Pacific region, from the Red Sea to the Western Pacific. They inhabit coral reefs and rocky substrates, often seen at depths where their sponge prey is abundant. Their presence in an aquarium can indicate a healthy reef environment, as they are sensitive to water quality and require pristine conditions.