I currently have a 3 stripe damsel in a 55 gallon tank with other fish. Needless to say he is a little terror. He is the only compatability problem I have ever had. If I'm ever going to add new fish I will need to remove the damsel. Will he be OK in a 10 gallon set up by himself for the long term. I do not want to return him or give him away because, despite his temperament, he's one of my favorites. If this would work, do I need a protein skimmer if I do live sand, live rock, a couple of snails,a shrimp and the damsel? The setup I have available is an complete 10 gallon set up originally used for freshwater with a HOB filter. Thanks!