Neon tetra disease?

About 4 of my 10 neon tetras have these weird lumps on their stomached. They come to a point. I’m really scared that it’s neon tetras disease but I’ve heard there is no cure. I have a bit of general cure and super ick cure but that’s basically it. Background info: 37 gallon tank with 2 platys,3 mollys,6 julii Cory, 1 rubberlip pleco, 1 dwarf gourami and the 10 neon tetras. My parameters were wack last week with ammonia up at 1ppm but currently they are at: less than 0.25ppm ammonia, (the liquid is yellow), nitrite 0ppm, nitrate 5-10ppm. if they do have neon tetra disease or some other disease will they pass it on to my other fish? Should i quarantine them? Here are some pics. Any help at all is greatly appreciated. I’m clueless at what to do moving forward from here.
EDIT: could someone move this to the disease thread? I can’t figure out how. Thanks!

 

In my experience with neon Tetra disease the fish often loose color and look generally unhealthy. The disease seems to progress quickly and kill fast. If I where you, I would quarintine them if possible, but I wouldn't jump to conclusions and say it's neon Tetra disease at this point. It could be something as simple as a minor case of bloat that will clear up on its own. It could also be parasites, or a bacterial infection. It could really be anything.
If you haven't experienced any deaths I wouldn't freak out yet. They look like very healthy fish otherwise and if nobody's died I highly doubt it's neon Tetra disease with how brightly colored they are. However, I guess anything is possible.
If you have a QT I would use it and just keep an eye on them. Keep an eye out for any changes in coloration, sores, stringy poo, clamped fins, etc. I wouldn't recommend meds at this point. If anything, I would skip feeding for a day or two and see if their bellies return to normal.

Edit- The gills seem to be quite red in one of the pictures. I would keep a close eye on that as well and make sure they return to normal now that you are over the ammonia spike

 

Thank you so much!! His Gill was like that when i bought him

 

I would be suspicious of gill flukes or something similar if the gills have always been that inflamed. Ive never had to treat for them, so I don't think I will be much help as far as that goes.

 

I think apart of his scales that cover that area got bit off at the pet store. I just set up my QT tank and i will definitely be putting my tetras in it tomorrow.