I've got my first corals today. My Duncan frag has been opening up great until a few minutes ago. My peppermint shrimp decided to start eating it/something off it to which this red mucus appeared and it closed itself back up. I'm guessing this is a defensive mucus? I've read that peppermint shrimp tend to eat dying flesh off of the corals, but I'm concerned it's actually eating the coral itself. Thoughts?




