[Alright here is the deal. In my original tank, I have a peppermint and a cleaner shrimp. The new tank came with a blood and a coral banded. Can all 4 of these go into a 45 gallon together or will they kill one another?? If so, which one should i get rid of? Also, when a shrimp molts, should you remove it, or just leave it in the tank? I have heard both. Thank you!]