Above is a link to a video of my fish. The skinny gourami is way thinner than all the rest. He seems to be having trouble swimming. The other 3 gourami have fat bellies (almost seem too big) and still don't necessarily look healthy. All the gourami tend to just be at the bottom corners of the tank. All other fish are fine in the tank. Are they okay ? I know dropsy can be a thing for newly established aquariums. I've had them for a couple weeks now.