Looking for micro brittle stars for sale? You're in the right place. Micro brittle stars are one of the most beneficial cleanup crew members for reef tanks — and a must-have addition we recommend at Reef Gurus. Unlike larger brittle stars that may prey on small invertebrates, micro brittle stars are completely reef safe and work tirelessly to consume detritus, uneaten food, and organic waste deep within your rockwork where no siphon can reach.
Why micro brittle stars are essential for reef tank health
Detritus buildup in rockwork crevices is a common source of nutrient spikes and algae blooms in reef aquariums. Micro brittle stars excel at accessing these hard-to-reach areas, consuming organic matter before it breaks down and contributes to poor water quality. They're 100% reef safe, completely harmless to corals, fish, and other invertebrates, and will not disturb your sand bed or rockwork structure. Once established, they reproduce naturally in your system, creating a self-sustaining cleanup crew that works around the clock.
How many do I need?
We suggest starting with at least 5 micro brittle stars, which is the minimum effective number for most tanks. As they reproduce over time, their population will naturally adjust to the available food supply in your system. A rough guide: 5 for tanks under 50 gallons, 10+ for larger systems or tanks with heavy bioload. When in doubt, order more rather than fewer — they'll only reproduce to sustainable levels based on available nutrients.
What to expect after introduction
Don't panic if you don't see them — micro brittle stars are strictly nocturnal and spend most of their time deep in rockwork crevices and under live rock. You may occasionally spot their tiny arms extending from holes during nighttime feeding. Given proper conditions and stable water parameters, they will begin reproducing within a few months, and you'll notice improved water clarity and reduced detritus accumulation over time.
Compatibility
Micro brittle stars are peaceful and compatible with all reef-safe fish and invertebrates. They do best in established reef tanks with moderate flow, stable parameters, and plenty of rockwork. Avoid housing them with aggressive predators like large wrasses or triggers that may consume them.
Our DOA policy
Must send photos within 2 hours of delivery. Replacements will be sent minus shipping costs. We do not cover return shipping on replacements, and we do not accept returns on live animals.