I had a pair of clowns for about a month, they seemed to be getting along and sharing an anemone. Then one day I came home to find one missing and never figured out what happened. So I get a new clown and after QT add it to the tank. The two clowns never really clicked, they would both stay on different sides of the tank (20g). They were together for just over a week and I come home to find my hermits eating the new clown. Now I have a cleaning crew of misc hermits and a few snails but nothing that I believe is fish aggressive The clown seemed to be doing perfect the day before didn't show any signs of being ill.