Two weeks ago I came home with a new Betta, his name is Drogon. He's a dragonscale I had been eyeing for over two weeks at Petco, every time I went in there I fell in love with him. I tried positioning his cup from the bottom tier to eye level of the customers and two weeks later he still hadn't been taken home. I didn't want another tank to look after but I eventually bought him. Had to have him. What caught my eye the most about him was his color scheme, which is nothing short of gorgeous. He is mostly a deep metallic purple, but has bright red and a lot of dark green mixed in. The pictures really don't do him any justice at all. I just think he's absolutely stunning. His top and bottom fins are lined in jet black and it really makes everything pop. His back fin was lined in a deep green/gray. Except now I've come to believe he has fin rot, and this whole time I've thought this was his normal color pattern. I went to check on him today and he's missing a nice chunk of his back fin, which was definitely there yesterday. He was recently evicted from his 10 gallon so I could keep an eye on an injured fish (my actual quarantine tank was treating new fish that came in with bacterial infections - we've been a mess around here lately) and moved him to a 6 gallon temporarily. Excuse the cloudy water as I just did a gravel vac and rinsed his sponge in the bucket (but any time you pick up a sponge to be cleaned there will be messy water). I did a 50% water change and will probably be doing 20-30% daily with gravel vacs until I see some improvement. Any advice on how to speed things along? Also, his 10 gallon will be freed up tomorrow - should I keep him in the 6 gallon as to not stress him out with another move? Or return him to the 10 gallon that might be a little more forgiving on water params? So many questions. Flowingfins any advice?