Lately when I come home in the morning and put a light inside the tank I'm seeing probably 30-40 on one rock alone. They seem to stay on that rock and on a colony of zoas on that rock. I think they are copapods anyway. If they are, is that normal to have that many? I have a peppermint shrimp I figured would eat them but I'm not sure it us. A few weeks ago someone posted a link showing all the different "creatures" that live in our tanks, what they are, and if they are good or bad. Along with good pictures of them. I can't seem to find that link so can someone help me out? Thanks in advance.