It doesnt look like its been set up for long. They probably will be replacing dead fish on at least a near daily basis. I dont think that there is even any concern about wheather or not the fish are healthy, probably just see it as a "maintenance" cost for replacing the fish. It looks like fish H#$L in there. If you whatch it closely there is a constant state of aggression, which means cronic stress. When you say, "who says you cant put 2 together" you speak as if this is going to work or is working. It is not working. You just arent seeing the death.