I got Sushi on Friday night, and got him setup in his new 6 gal tank on Saturday (tank is currently being cycled, bad thing I know I know). On Monday I noticed that it looks like he may be losing part of his anal fin. I did a 33% water flush yesterday and tested, ammonia was in the range of .5 to 1ppm. Today I did a salt bath and then changed 50% of the water in the tank. Ammonia levels are still around the same as they were yesterday. Tank stays between 80-82 degrees and it is a 6 gallon tank. Is this actually fin rot or is he could he be ripping his fins on the plants in the tank with him? If it is I want to catch and treat early, he is very active and eats normally. Pictures of the him from tonight are below.