JUMPING

Jumping behaviour suggests the fish have a problem with parasites, or their water. You'll see fish jumping when the pH is dropping, or when some other irritant is accumulating in the water, like Ammonia. So, the first things you do are water tests. Then, if nothing is found, please consider that parasites, particularly with Flukes can cause jumping. The fish hope that jumping will dislodge the parasites. Instead, it often leads to a fatal flop-fest on the ground. So, establish water quality first and then treat for parasites. I'd recommend salt as a good first choice, or maybe the potassium permanganate treatment.