Normal. When I got my RBTA it did the same thing. Try to find an area with moderate laminar flow. Also after my RBTA eats it poops out a bolus. In fact just the other day it pooped out some brown stuff that looked like zooaxelae (sp?), but from my understanding a little expell happens from time to time. It shriveled all up into a tiny ball and now its bigger than ever lol! I just fed it a whole shrimp and ate like a champ. The thing I have learned about anemones is that from time to time they have moments that looks like its gonna go kaput. Just keep an eye on it and as always the anemone will to where IT likes, but be proactive and keep it safe from power heads.