I purchased a crocea clam about a week ago and it seems to be acclimating well. Although tonight, I noticed that my flame angel would take a nip at the mantle every time it passed over the clam. As a precaution, I cut the top off of a 2L clear pop bottle, punched a bunch of wholes in it to allow for circulation, and placed it over the clam to protect it. My question is, will I have to part with either the clam or the flame angel or will the angel’s behaviour subside over time? I keep my fish fairly well fed and have not noticed the flame angel or any other fish nipping at my corals.