So I just bought a green BTA, it really doesn't look upset or mad. I can't see the mouth to know if it's tight or loose. But the foot looked very good when I bought it. When it was in the bag I seen the mouth once, it looked slightly open but not sagging or gapping open. I'm very new to anemones so I just want to know how to know it one is happy or not? It is still inflated, when I first put it in my peppermint shrimp gave it a very hard time, so I moved the shrimp into my back sump. I fed it it took the food and looks as if it ate some of the shrimp, but this morning I noticed a small pice of the shrimp being eaten by my clean up crew. It hasn't moved yet and never fully opened. Is it happy or not? Thanks in advance.