Yesterday my emporer angel was swimming around bright and beautiful. This morning I woke too see him looking like this(picture below) then checked the peramiters of the tank and he had passed. Have had him for close too 3 months. Other fish in the tank are phantom clown(2) and firefish(1) Nitrite,nitrate,ammonia lvl 0. Salinity 1.026. Ph 7.9-8.1 average floating. I also noticed a few bubbles/foaming on surface.