Hey i don't know anything about sorority because i never had it. I would recommend to quarantine the girl for observation,but than i don't know how they will behave if it only 3 of them. Some people saying that 3 is dangerous number.
Are you sure she is bloated because of food? Did she get bloated right after food?
Bloating can be due to overfeeding or to internal parasites. With internal parasites the poop will be abnormal color(white, broken white, clear, wormy stringy color) . For the girls though it is normal to have white poop due to the eggs. Internal parasites also contagious for the other fish.
If it overfeeding she probobly would be fine with fasting for a day or two.
I hope more experienced member will come along to help you. For meanwhile i think it would be a good idea to give them a fasting day . If she has something serious like internal parasitres, she will probobly develop new symptoms soon. But than quarantine her as soon as possible. Or you might even need to treat whole tank.
When you have sorority or more than one fish in one tank always have extra hospital tanks .
Make sure to swish/rinse the filter media in the tank water regularly since it gather a lot of gunk on them:)
Last edited by ANHEL123; 11-16-2013 at 09:49 AM..