My adult Diamond Goby has disappeared. I have a 32g Biocube that has a lid with no access to the back chambers when closed. I have moved the rocks and searched beneath the sand. No signs of him anywhere. I have 2 clowns, a coral beauty, 2 camel shrimp, and some turbo snails. Is it possible that he died and this crew managed to eat him within the past 24 hours?