I have a 7 " Senegal bichir who in the past two weeks has developed a strange swimming stroke. The best I can desribe it is his right side dips then his left quickly though. He wobbles left right left right very quickly without much forward movement. If he uses just his front fins for locomotion he seems to be fine but when he tries to get his body involved he spases into the left right wobble. He is eating fine just can't move very well. I saw the dats take a shot at him so I thought they could have possibly broken his back? He is moved now to a safe place. I will try to think of a better way to explain his movements. Thanks all..