I have a 40 gallon breeder tank that has been set up for about 2 months. I switched from a 29 gallon bio-cube where I have had the same fish for about a year. On Monday I added a Coral Beauty to the tank along with 2 sand cleaning starfish and a few snails. I watched the tank a few hours before bed and everyone was fine. I have not seen my six line wrasse since. According to the store and everything I have read there should not have been compatibility issues. Any ideas on what happened to my wrasse?