Common name: Warty Sea Anemone

General information

The Warty Sea Anemone, scientifically known as Thalassianthus aster, is a distinctive species of sea anemone that is admired for its unique appearance and behavior in the reef aquarium. This anemone is characterized by its broad, flat oral disc and numerous long, tapering tentacles that are often tipped with a contrasting color, giving it a star-like appearance. The "warty" part of its common name comes from the verrucae (small wart-like protrusions) scattered across its surface, which can trap sediment and help the anemone blend into its surroundings.

Care

Thalassianthus aster requires a stable aquarium environment with moderate to strong lighting and water flow to thrive. It is important to provide a sandy or rubble substrate where it can anchor its base. This species can be sensitive to changes in water quality, so maintaining optimal parameters and regular water changes are crucial. Feeding can include small pieces of fish, shrimp, or other meaty foods, but ensure that food is not too large as this can damage the anemone.

Symbiosis

While not as famous for hosting clownfish as some other anemones, Thalassianthus aster can form symbiotic relationships with certain species of clownfish and other small fish that seek refuge among its tentacles. These fish are believed to have a mucus coating that protects them from the anemone's stinging cells. In return, the fish may provide the anemone with nutrients through their waste and help keep it free from debris.

Habitat

The Warty Sea Anemone is found in the Indo-Pacific region, typically in shallow reef environments. It prefers areas with plenty of sunlight and moderate to strong water currents, which help deliver food particles to its tentacles. In the wild, it can be found at various depths, often attaching itself to hard substrates or nestled within the reef structure.