Common name: much-desired flabellina

General information

The Purple-Edged Ceratosoma, scientifically known as Flabellina exoptata, is a striking nudibranch, a type of sea slug found in tropical and subtropical waters. This species is part of the family Flabellinidae and is known for its vibrant purple coloration with orange-tipped cerata. Nudibranchs are popular among marine enthusiasts for their unique shapes and vivid colors, making them a prized sighting for divers and a fascinating addition to a well-established reef aquarium.

Care

Flabellina exoptata requires a specialized aquarium setup that replicates its natural environment. They are sensitive to water quality and require pristine conditions with stable parameters. This species feeds primarily on hydroids, so it's essential to provide a food source that matches their dietary needs. Due to their specific feeding habits, they are considered challenging to keep in captivity and are recommended for experienced aquarists.

Reproduction

Like many nudibranchs, Flabellina exoptata is a hermaphrodite, possessing both male and female reproductive organs. They can self-fertilize or mate with another individual. The eggs are laid in gelatinous spirals or ribbons and are often attached to the substrate or aquarium glass. Raising the larvae to adulthood in captivity can be a complex process due to their specific dietary requirements.

Habitat

Flabellina exoptata is typically found in coral reef ecosystems, often on or near their prey of hydroids. They can be found at various depths, usually ranging from shallow waters to deeper reef slopes. Their distribution includes the Indo-Pacific region, with sightings from the Red Sea to the Western Pacific.