MIA Shrimp

[foreveringlass]

Can anyone shed light on what may have happened to my cleaner shrimp? He has been missing for quite some time now. I first thought he was in hiding, but I have lost hope now. He had been very happy and healthy. He molted regularly and all the fish would visit daily for their cleaning. I have 2 clowns, 2 yellow tail damsels, a sand sifting goby, a blue tuxedo urchin and some hermit crabs and snails. I also had a coral beauty, which has since died. Does any one know what could have happened?