Common name: Feather Star

General information

The Feather Star, scientifically known as Comaster nobilis, is a captivating and ancient marine invertebrate that belongs to the class Crinoidea. These echinoderms are characterized by their feather-like arms which they use for suspension feeding. Feather Stars are known for their striking colors and intricate patterns, making them a visually appealing addition to any reef aquarium.

Care

Caring for Feather Stars requires a well-established aquarium with stable water conditions and moderate to strong water flow to mimic their natural habitat. They are suspension feeders, so they benefit from the presence of plankton or fine particulate organic matter in the water column. It is important to ensure that they are not outcompeted for food by other filter feeders in the aquarium.

Reproduction

In the wild, Feather Stars reproduce by releasing sperm and eggs into the water column, where fertilization occurs externally. In the aquarium, however, reproduction is rare. Hobbyists should focus on maintaining optimal water quality and providing a suitable diet to support their health and longevity.

Symbiosis

Feather Stars often host a variety of commensal organisms, such as small crustaceans and fish, which seek refuge among their arms. This relationship is generally benign, with the commensals gaining protection and the Feather Star remaining unaffected.

Habitat

Comaster nobilis is typically found in tropical reef environments, often attached to substrates like rocks or corals. They prefer areas with moderate to strong currents which facilitate their filter-feeding behavior.