So I just noticed today that my girls are getting along... except for one. As I'm typing this I'm watching 3 of my girls swim around the front of the tank together without any problems, but my little dark girl (green in the picture) doesn't really stay with them. She kinda stays by herself for most of the time, unless it's feeding time. I usually see the cambodian give her a little chase away from the group. She doesn't chase her around the tank... she sorta just "shoos" her away. Maybe it's because she's smaller than the rest?