Came into my office this morning to find a nickel-sized Brig attempting to chow on a full sized RCS. I know that the shrimp was still alive, b/c I "rescued" him. Both are well fed on algae and veggies and it is a planted tank. Is this normal? I have been losing shrimp to what I had thought was the sponge-covered filter. Now I am not so sure. Brig removed and shrimp counted. Just wondering if this is a common thing to have happen. Any experience with this?