+1^^ looks like it is acropora eating flatworms got to it. To break the life cycle dip it ever few days to minimize stress and scrub the eggs off. Or you could get a flatworm treatment and dose it to your tank which is reef safe.
Yup. It's my only acro and I pulled it out of the tank. Had a few spots that looked like small flatworms on it and the marking were much the same as pictured in the link. The frag had gone downhill today and has had little to no polyp extension for a few weeks now. I will be adding a few wrasses once I can get the bi-color Angel and the blue devil damsel sold over here. They've been limiting what I can add and drove off my last wrasse. Will be adding a "lid" to the tank to keep them in.