@aquakev: I wouldn't say it's Hexamita, since the fishes are supposed to loose weight when they have that disease. The ram doesn't look like he lost weight at all. Instead he has bumps all over his body (e.g. on the back), a bloated abdomen.
I've looked at all kinds of disease information online and think we should concentrate on the swellings. The only diseases I have found with bloating are abdominal dropsy and fish tuberculosis. If this fish really has tuberculosis you have to be very careful with your tank and don't just stick your hand in there since it can also infect humans. Google around and try to find the best medication/treatment results for these diseases.
If you don't have a microscope, you can't be sure what most infections are, since most diseases don't include all the symptoms, they always look different.
As long as nobody has a different idea (considering the bloating and clearly visible bumps) I would say separate him from the others, try to find a medicament to treat him with.