jeasko
Fishaholic
would second skis suggestion that the copperband is the prob, I had an angel fish I was sure wasnt nipping anything then m y first bit of xenia died off without any explanation, when I put a new bit in i noticed one head starting to open and before I could do anything the angel nipped it off, once the angel was removed the xenia came out in full within 48 hours, really need to spend a long time watching it to see if its nipping anything.