This is very confusing. The foxface is very ill, and the other fish are showing acute symptoms as well. I'm hampered by needing to try and diagnose this remotely. If they were my fish, I would do a skin scrape and look at the sample under a microscope and know pretty well what is going on here. Since I can't do that, I'm stuck guessing, and I HATE guessing with other people's fish.....Here are the video could video other ones hiding behind rocks, Thanks
If I had to make a determination between flukes, bacteria or protozoans, I would say this is a protozoan infection. Now, between ich or velvet or Brooklynella? I think it is either advanced ich or velvet. In either case, since hypo failed, I think you need to consider another treatment. Copper is the best choice, but only if you have a treatment tank. Chloroquine, if you can get some quickly, is an option, but it will kill any invertebrates and algae...but it can be dosed in your DT. Hypo, you've been down that road already.....
Jay


