I've already lost my BEAUTIFUL clown knife fish earlier this week and I fear that my bichir and florida gar are infected with the same disease. They are all eating fine but appear to be rubbing up against the plastic plants CONSTANTLY. The clown knife fish had been doing the same thing, along with rushing up to the top of the tank to splash the water and rush back down. Additionally, the ck developed a red circular dot on his tail region. He appeared to be doing fine but then I came home one day to find him floating at the top of the tank. I've been doing large water changes (40-50%) while adding salt as well. The temp is 84F, not sure if I should turn it up higher or not. I've got a small hob with two fluval canisters running on the tank as well. Should I continue my process of frequent large water changes while adding salt or try adding parazin to the tank to treat for lice?