A couple of weeks ago I noticed my Gouramis coloring get progressively darker. I thought it was because he was getting older. Then I noticed he was swimming aimlessly bumping into the decorations also when I put flake food in the tank He would swim right past the food. I looked closer at him and saw that one of his eyes is completely cloudy and the other has a small white dot in the center. I thought I had parasites but I found they were Detritus worms. I’m struggling getting rid of hair algae as well, but I don’t think that’s the cause.