I am the type of person not to use meds in my tanks unless absolutley necessary. Anyway, I had a female Mbuna Cichlid (Kenyi) that got beat up pretty bad while the male was trying to breed with her when she wasn't willing. The female had no tail fin left and the anal fin was also damaged pretty bad and several scratches. I noticed and put her in a 20g tank for treatment.
I have had her in there about four weeks now. I have been feeding her a varied diet with lots of veggie matter and some live and some homemade foods. I have also been doing twice weekly water changes. I decided to use melafix as well for the first week then after every water change. I am convinsed the water alone heals the wounds fast. I am also convinsed the melafix has aided to speed up the healing.
She is doing good now and I am getting ready to move her back to the main tank. Her tail is full grown back and no sign of anything ever happening besides you can tell all the new growth from the damaged tissue. The point is melafix is fairly harmless to most fish and is a great product in my experience for aiding in fin and tissue re-growth.
Here is a video of the two Male that beat up the female...
http://www.freshwatermadness.com/video-lounge-f17/male-and-female-kenyi-t45.htm
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"There he goes - one of God's own prototypes -
a high powered mutant of some kind never even considered for mass production.
Too weird to live, and too rare to die".
Fear and Loathing in Las Vegas