Neon tetra disease look like this, yeah.
Don't forget to QT your new arrivals, if there's only ONE fish that look ill in the LFS tanks, don't buy.
If there's one fish with salt like white spots on them, don't buy, or prepare to treat for ich.
In my case, treating neon/cardinalis with salt was easy, so I don't bother if the cardinals i'm buying have ich. I put 0.3% salt (3 grams of salt/liters) and raise temp to 29C° for 10 days. then you WC, wait 5 more days, if ich is gone then they are ready to go to the main tank.
Salt kill plants and scaleless fishs and some parasits, like ich in the free swimming form.