Originally Posted by MaggieLynn
This is some good info, i woke up this morning to notice two of my girls were missing some chunks of fin after i fight im guessing, they are both in their own QT tank, but in my 10 gal are the other 3. Im wondering if its ok to leave the three in there because i thought that little number of girls was not good
I would 'cup' the three other bettas individually and float their containers in the sorority until everyone makes it back to the tank. Anchor the cups to the tank side with tape, and cover the cups with plastic wrap (make sure the bettas can get fresh air) to prevent escapes/intrusions.
10 gallon sororities are very dicey, because of the low number of fish in the sorority if one or two are removed... and low numbers increase aggression and territorial behavior.