I've had a BTA for about a month or two and had two incidents where the anem would be small, have thin tentacles, and have its mouth open. After some research i came to the conclusion that he was either really hungry or starving, so I gave him ReefRoids. Just so this incident doesn't happen again (or something worse) what do I feed the anemone and how many times a week do I feed him (I watched som videos about BTA's and the guy said to feed them 2x per week and that he feeds small pieces of frozen shrimp to the anem)?