I have a 20 gallon freshwater aquarium. The dwarf gourami is one of the first fish i got. He is low key peacful and doesnt mess with any other fish. I recently added a fancy guppy and a ballon molly. As soon as the Molly hit the water its constantly bullying my gouarmi. It follows him everywhere,nips at him and it puts its body on the bottom of the gouarmi and pushes it towards the top of the water. The Gourami doesnt really defend itself. Should i be concerend and will this stop? or do i need to take the Molly back to pet store? Its only day 2 since they been together and its still goin on. As soon as the Molly sees me go near the tank it backs off the Gourami but if im not payin attention its all over the gourami like white on rice.