Crab on SPS?

DraggingTail

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Is a crab on my SPS beneficial?
IMG_20190602_214548.jpeg
 

ca1ore

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Is the picture supposed to show the crab? If so, I don’t see it. If it was a wild colony, many of them come with commensal crabs. They are cool and do no damage.
 

saltyhog

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Looks like a hermit on top of a bonsai? If so, the only time I see hermits on my SPS is if there is a dead area with some algae on it. I've banned all my hermits to the sump because of this behavior.
 
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DraggingTail

DraggingTail

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Yes, a red leg hermit is
climbing on it. You can see 2 of the on the lower right.

Do you see any tissue necrosis?
IMG_20190602_222457.jpeg
 

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