For the purpose of helping others with this issue, I am posting another update. Nothing I tried worked and the fish did not eat anything the entire time in quarantine.
I treated with epsom salt for 5 weeks and even without eating, the bulge has not gone down. However the fish does look thinner if I look at her from above.
This last week I treated with tetra parasite guard. Since the fish was already in qt and nothing else was working I figured I’d give it a shot.
I think I’m doing more harm than good by keeping her in qt so I returned her to the main tank this morning.
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