Hope someone has some input. Well i had a maroon clown ina 60 with triggers and a grouper and he was doing good. But in fear of future hostility i put him in A 20 all by himself. Now hes hugging the floor glass and isnt swimming around , just stays in the same spot. Hes obviously isnt getting bullied so all i can think of is the bare bottom glass. Do u think he could be stressed without sand? Maybe if he was wild caught and is a little disoriented?