Something is eating Coraline off rocks

joesmoe45

Non-member
Something in my tank is eating the coraline off the LR in my tank. Now I have small bright white patches. I have 4 hermit crabs and 3 snails
IMG_9531.JPG
as part of my CUC. I did just find an Asterina starfish that I removed. Any thoughts?
 
I’ve noticed Asterina stars can eat coralline in patterns like you have.
 
There is more than one species of Asterina. At least one eats coralline algae, I agree with the above post.
 
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