Common name: Feather Stars
Crinoidea, commonly known as Feather Stars, are a fascinating group of marine animals belonging to the class Crinoidea within the phylum Echinodermata. These creatures are particularly notable for their feather-like arms, which they use for both locomotion and feeding. Feather Stars are ancient animals, with a lineage that dates back to the Ordovician period, making them one of the oldest groups of living echinoderms.
Feather Stars are mostly found in tropical and subtropical ocean regions, often residing in coral reefs, rocky outcrops, or sandy substrates. They exhibit a wide range of colors, including vibrant yellows, reds, and purples, making them visually striking additions to any marine aquarium. However, their care in captivity can be challenging due to their specific dietary needs and sensitivity to water quality.
These echinoderms are suspension feeders, capturing plankton and detritus from the water column using their feather-like arms. In an aquarium setting, they require a well-established tank with plenty of live rock and a mature biofilter to ensure stable water conditions. Additionally, they benefit from supplemental feeding with fine particulate foods designed for filter feeders.
Feather Stars are known for their unique ability to regenerate lost arms, a trait shared with other echinoderms. This regenerative capacity is not only a fascinating biological feature but also a practical adaptation for survival in the wild. For hobbyists, observing this regeneration can be an intriguing aspect of keeping these animals.
Overall, while Feather Stars can be a beautiful and captivating addition to a marine aquarium, they are best suited for experienced aquarists who can meet their specific care requirements and provide a stable, nutrient-rich environment.