chefbill
Aquarium Advice Freak
Found these on the underside of the skeleton of my candy cane. The coral hasn't open well lately, are these the cause? 
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- Thread starter chefbill
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mr_X
Aquarium Advice Addict
Possibly. Some sort of xeniidae species would be my guess. It doesn't look like colonial hydroids, but I have seen these on stony coral skeletons more than once and haven't seen any adverse effects. I can't give a definite on whether they are or aren't hurting your caulastrea, but my advice would be to scrape the closest ones to live tissue off and see what happens.
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