I have been told by many shop owners that dwarf gourami are sensitive fish and difficult to keep alive. What would be the least sensitive of the dwarf gourami, as I have only had my tank for 3 months? I probably would get the gourami their own tank. Are they aggressive toward one another? Right now, in my 20 gal tank, I have two black mollies, 2 redwag plates, and one oto. It is a planted tank.
