Gourami was exhibiting signs of bloat. We have been monitoring the fish and this morning his insides seemed to burst. Attached picture. Thought the fish was a goner for sure. We move him too a clean bowl, but since he seems to be doing better. No idea what this could be. This was the only gourami in the tank with some tetras. Also continuing to deal with algae in the aquarium. Trying Algaefix over the past week and multiple water changes without improvement.