it definitely wasn't a big thing, she seems to be ok. I still watch their stool just in case.Yes I agree this sounds as if she might not even have an issue, she could be hiding at the bottom at night because of the other gouramis... like Freshy said it can give problems.
recently her poop is shaped like a ball. I just noticed there was a small bubble right on her anus, it is the first time I see a tiny bubble in a fish hole like that but the bubble was gone after a couple of minutes. Am I overfeeding or is it some kind of parasite or disease/infection? Her behaviour has not changed: very active during day time.Well, that seems very good! How's her poo? Still ok? Gouramis IME tend toward longer poops, not pleco long, lol. Keep feeding a variety of foods