Originally Posted by DoctorWhoLuver
Is his spine bent and is he lethargic? Pop eye could be due to bad water quality, but your parameters seem fine. Bumps/lesions, loss of scales, pop eye, lethargic, and a bent spine could be symptoms of fish TB... If it happens to be TB, unlikely, lower the water temperature, since the bacteria prefer warmer waters. TB is very hard to treat, and it is sometimes hard to stand by and watch you fish suffer...
Thanks again for the response, I really value the opinions of people on this board.
No, his spine is not bent as far as I can see.
Just the lump on the left side.
Lethargic yes, until feeding time. Although he hasn't been jumping since I noticed the lump.
I'm not sure I was right about him having pop eye.
I got that impression when he was laying on a leaf close to the surface.
It may be that he never stayed still enough for me to see his eyes up-close b4.
If it is, it is affecting both eyes equally and they haven't changed in the last few days.
I hate playing veterinarian with him.
I came across TB online and it is certainly on my list of possible diagnoses.
I'm not sure if I can rule out internal parasites but the PraziPro seemed to do nothing.
Other than that I guess it could be an infection of some sort.
Or a tumor.
I'm trying to find IAL locally as it seems that might be some help to him.
I wish I just knew for sure because I'm not sure what to do next.