I noticed on one of my Tiger Barbs that he has a little bit of his tail missing mostly liking from my other Tiger Barbs chasing and nipping at him. It isn't bad and it isn't effecting his swimming abilitys and the other fish aren't chasing him any more then normal. So my question is will this grow back on its own? I know there is chemicals like Melafix, but I am not going to use that unless it gets damaged to the point where he can't swim as well and is getting picked on by me other Tiger Barbs.