I don't know if I can post this here or not, my baby black ghost knife Spirit has lost most of his tail and I have no idea how it happened,he still had his whole tail when I gave him his breakfast this morning.Also because he's scaleless I don't know what to do for treatment, can anybody please help me to help poor Spirit? He is not showing any signs of illness or distress,he still has a normal appetite and is just as spunky as ever. I have never seen any of the other fish act aggressive towards him,but I don't know if maybe one of them did hurt him and I just didnt see it happen.