Hi all, I can't make better picture. My clownfish has this on the side, is a bit darker, online I read that sometimes they get sting from aptasia or something else, but it was smaller and circle. Now looks like is a but bigger in size than last week. I don't have anemone in my tank, aptasia trying to kill them but my peppermint doesn't want to eat them. Few sps, Toadstool and zoas.