Ok, I have had my girls tank set up for a while now and when I first set it up, there was some major fighting the first night. My oldest girl Ariel got quite torn up. She doesn't seem to be getting any better. She has scales missing and her tail is very ragged. I originally added some salt, so should I keep doing that and then add some melafix, and see if she gets any better. She is still very active and eats fine and all, she just looks terrible. What should I do? To get the affect of how bad she really is, here are a few pics.
the same day she started fighting, so everything is peaceful now, she just WON'T heal! 
I misunderstood. Naughty girl!!
