Genus
Common name: Green Brittle Star
Scientific name: Ophiarachna
Ophiarachna is a genus of brittle stars commonly known as Green Brittle Stars. These nocturnal invertebrates are characterized by their long, slender arms which they use for locomotion and capturing food. They are popular in the reefkeeping hobby for their scavenging abilities, helping to keep the aquarium clean by consuming detritus and uneaten food. They are generally reef-safe but can grow quite large and may become predatory towards small fish and other invertebrates if not well-fed.