Common name: Variable Brittle Star

General information

The Variable Brittle Star, Macrophiothrix variabilis, is a species of brittle star often found in reef aquariums. This invertebrate is known for its long, slender arms and central disc, which can exhibit a variety of colors and patterns, hence the name 'variable'. They are nocturnal creatures that play a beneficial role in the tank by scavenging for detritus and uneaten food, helping to keep the substrate clean.

Care

Macrophiothrix variabilis is relatively easy to care for, requiring a tank with ample hiding places and a sandy substrate where it can burrow. They are sensitive to rapid changes in water parameters, so maintaining stable conditions is crucial. Brittle stars are opportunistic feeders and will accept a variety of foods, including small pieces of fish, shrimp, and other meaty foods, as well as sinking pellets.

Reproduction

In the wild, brittle stars reproduce both sexually and asexually. In the aquarium, they are more likely to reproduce through fragmentation, where a part of an arm breaks off and regenerates into a new individual. This can be an interesting process to observe and can contribute to the population of brittle stars in the tank.

Habitat

The natural habitat of Macrophiothrix variabilis includes coral reefs and sandy bottoms in the Indo-Pacific region. They are often found hiding under rocks or within the reef structure during the day and emerge at night to feed.