The tankmates are overlooked. What species are these catfish and knifefish? It is possible someone is bullying the gourami by harassing it around even if the bully doesn't leave physical injuries to the fish.gootswa;2893041; said:One of my gold gourami has seemed to die for no reason at all. I think that the water is fine because my catfish have had no problems or my knifefish. They are the most sensitive ones that I own.
What are your water parameters?
What size is the tank?
What do you feed and how often?
What is your tank maintenance regimen?