Help ID these stars
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fishguy242
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hi, asterina, micro brittle... 
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The1Leinad
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Are both good?hi, asterina, micro brittle...
fishguy242
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micro's are, asterina's debatable,
just remove manually to keep population under control IMO...
just remove manually to keep population under control IMO...
vetteguy53081
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Brittle Stars are considered reef tank safe since they leave corals, fish and other reef invertebrates alone and scavenge for uneaten food and phyto. The asterina however do not leave corals alone and will go after zoa (from experience) and multiply like mice. I remove any I see immediately.
Micro brittles are great detritivores. Asterina stars are sometimes problematic because they can multiple rapidly and suffocate certain corals like Zooanthids. If you start seeing a lot of asterinas I would recommend adding a harlequin shrimp barring you do not have any other ornamental starfish like linkias or Fromias
