Zander_The_RBP;4113252; said:@ OP
i think your being far to paranoid about the whole thing. Everytime i go in to do maintenance on my tank it never even crosses my mind that i could be bit. Becuase piranhas are naturally very shy as soon as you make a move towards one of them he is going to freak out and swim to the other side of the tank.
form the sounds of it your saying you haven't done any maintenance ont his tank before? not even water changes ?
@ Tien
Welcome to MFK