So I bought two Dwarf Gouramis and they done fine for about 3 weeks. Then slowly around their heads they started to have a blue tint to them. It gradually got worse showing up between the orange stripes on their body. I wake up the next morning and one died and then a few days later the other one died. Does anyone have an idea what this may be? They were my favorite fish. Sorry, I don't have any pics though as this happend before I ran across this site.