I discovered yesterday that my cleaner shrimp has disappeared. I came home to find my banded shrimp had molted and then looked around for the cleaner and it's nowhere to be found. They have been living together in harmony for many months in my 55 gallon with plenty of live rock. I'm wondering if maybe the banded was uneasy after just molting and murdered him! Just tested my water and everything is fine. Anyone ever have something similar happen? I hate when stuff just disappears, drives me nuts