yeah...often times with a broken back, the more they try to swim the worse the damages become. it doesnt look good at all for the gar.KaraJo;1783718; said:I would put it down...It is your choice of course, but if its eating less and cannot move its back end, I would say he is going to be suffering and it would be hard to make him do that for years to come. I agree the bigger tank could have caused him to get up enough force to break his back off the glass. If he is at this state right now and appears as though he will not recover my opinion is he will be best euthenized.