Will a ghost knife fish tail grow back after being chomped off?

Fish can regrow fins (they never quite look the same, but they do regrow, usually pretty fast if your water quality is good and there is no complication with either fungal or bacterial infection). They cannot, however, regrow body parts. If part of the ghost knife fish's tail as well as 'fin' has been chomped off, it can heal, but will never regrow.