So I'm new to taking care of fish. I'm looking for setup a beautiful aquarium. I bought a 5 gallon tank and some fish. 2 mollies, 1 red dwarf gourami, a baby pleclostomus, and a baby blushing longfin tetra. Bare in mind that I got all my recommendations from they guy at pet smart. Unfortunately my black mollie just 12 hours after I got him. He seemed to have white peeling on the top of his head and cloudy eyes. The mollie came with a white spot when I got him. As of now the remaining fish seem fine. All I want is a beautiful healthy tank that I can grow with time. Totally open to start over if someone could assist me proper instructions. Hope you guys can help!!