gorgeous set up
i love the rocks so much
50 gallon Semi-aggressive
45 gallon Tropical Community
15 gallon Platy Tank
15 gallon Crab Tank
1 gallon Betta octagon
Just because your Gourami is sick does not mean it is always Iridovirus, DGIV, Gourami Disease, et cetera.
Look at all the other factors in your tank before coming to this conclusion.