This is why you put Piranahs in species only tanks...
On another note, I wouldnt think bone would grow back.
This.....
I can understand buying cool fish every time you walk into your lfs, but you have to do research and realize red belly piranha do best in schools of 5 or more in species ONLY tanks!
You are putting way to much stress on your stock! Buy more tanks!
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Go S.Vettel #1 RB8 3X WDC!!!!!!!!!
http://www.monsterfishkeepers.com/forums/showthread.php?504763-Cheap-plants-less-nitrate!-POTHOS[/QUOTE]