I recently bought a dwarf gourami to add to my tank containing other fish such as neon tetras white skirt tetra and a Platy as soon as I put my new dwarf gourami into the tank one of my Molly fish started picking on the gourami the gourami will no longer leave the corner and spends his time hiding I isolated the Molly in a breeding net inside the tank and the gourami is starting to swim around again but I'm afraid as soon as I put the Molly back into the tank that the gourami will go back to hiding and get bullied again . What should I do????