I think your Ram is suffering from some type of genetic spinal scoliosis. I've seen fish afflicted with fish TB and severe intestinal bacteria infections. Besides the obvious bent & sometimes twisted spine, they have other things in common, lack of appetite, impaired swimming ability, fungus sprouting out of the mouth, ect. In other words, those fish really looked bad. If your ram is eating and otherwise acting normally, I still say the problem is likely genetic. As for the speedy onset of the spinal bend, I have no answer.