I have a relatively new tank. 125g. To cycle, I had 9 damsels - 1 died - 8 left. They are the ones with the dark blue body and yellow tail. Now I have 8 damsels, 9 hermit crabs (super small), 2 clowns, 1 naso tang, and I just put 1 blue hippo tang (2") and one of the damsles keeps beating on...