I just added her. And the other girls couldnt care less lol. She is alil bigger than the biggest female in there and is about the size of a male almost so she is pretty big. but she is fitting in fine. i will be home all night and day tomorrow so Im going to keep an eye on them. I plan to up grade to a 20 gallon just so I can add some more caves and plants. so far there are 4 caves and they all love to sleep in them. so I figure one cave for each. I was worried a fight would start right away because I have a girl that is just a brat. when i first got her all she did was pick fights because atleast once a month she has nipped fins. So far so good though. I have been lucky with this sorority. It is my first and I have had really no issues with them, the only issue wasnt really behavior it was ich. that was fun. I had 5 3/4 gallon qts around my room. I decided to treat them all in qt with medication and also medicated the tank with no fish in it. ugh pain in the butt