I have several medium sized, healthy angels in a large aquarium. Recently I added a cute dime-sized angel that I couldn't resist and she is fitting in very well with her larger tankmates. The larger angels are voracious eaters, and I feed them 3 times a day, as much as they can eat in 2 or 3 minutes. Lately I have noticed that she is eating way too much in every feeding. Afterwards her stomach is very bloated. I thought at first that it was dropsy, but noticed that the bloat goes away whenever she poops. Is this harmful to her?