Common name: brittlestar

General information

The Brittle Star, scientifically known as Amphiura filiformis, is a species of ophiuroid echinoderm that is often found in the marine aquarium trade. These invertebrates are known for their long, slender arms which they use for locomotion and feeding. They are nocturnal creatures and are often hidden during the day.

Care

Amphiura filiformis requires a tank with a sandy substrate where it can burrow and hide. They are scavengers by nature and will feed on detritus and small organisms within the substrate. It's important to maintain good water quality and stable conditions as sudden changes can stress these animals.

Reproduction

Brittle Stars are known to reproduce both sexually and asexually. In the aquarium, they often reproduce by releasing gametes into the water column, where fertilization occurs externally. Hobbyists may occasionally notice tiny brittle stars appearing in their tanks, which are likely offspring from adults.

Habitat

In the wild, Amphiura filiformis is typically found in soft sediment areas such as sandy or muddy bottoms. They are widespread in the Northeast Atlantic, from the North Sea to the Mediterranean. They play an important role in the benthic ecosystem by recycling nutrients and serving as prey for other animals.