I am new to the hobby and have set up a 75 gallon reef tank. Tank has been setup for over 2 months and I have been slowly introducing corals and fish. I started with a pair of clowns, added a blenny and have a torch, cotton candy LPS and introduced a RBTA. I also added a shrimp 3 weeks ago. All appear to be doing well. I make a 10 gallon water change with NSW adjust for Ca and test water at least once a week. Ammonia is at 0, NO3 and NO4 are 0. Last weekend I added 3 Lyretail Anthias. Last night I noticed they were hiding and the shrimp seemed to attaching one of them. I was not able to get the shrimp out but this morning all 3 Lyretail Anthias are dead. Any ideas what could be causing the mortality? Could the shrimp be causing issues.