I have a black molly who has been secluded for 2 weeks. At first it was for long stringy white feces. I have been putting epsom salt in the water and feeding only peas and the white feces has cleared up but now it seems to have raised scales on both sides right behind the gills. Any idea what this may be. The fish is active, or as active as you can expect in a one gallon tank. I have been conducting daily 100%water changes also.