I had the most lovely DG, and this morning, I found him laying on the bottom of the tank, struggling to breathe. I will shortly put him out of his misery. He was failing, I tried different things, but I think he has that disease, irdovirus. I’m so ****. He was my favorite. Little dude would commically spit water on me. He’s quarantined now. Any last ditch efforts? I’m open to advice.