Okay first some background..
I have a betta that I had adopted last May. I was keeping him in a small one gallon bowl until I could save up the money/it got too cold to move him into a 10 gallon heated aquarium. Long story short, I had to move into temporary living situation and didn't get him moved fast enough and he got sick. He was very lethargic, had white fluffy patches on him, plus his tail was disintegrating, the tips of his fins looked bleached and he had some metallic patches around his gills and his face which was previously just black as far as I could tell. He was also flashing.
I bought a whole room heater to keep the temp at 76, and treated with Bettafix. Within a week he was very active (building bubble nest) and the white fluffy spots where gone. His energy and personality also returned to normal
He continues to act perfectly fine. He has tons of energy, a big appetite and continues to build bubble nests. The fluff has not returned. However the metallic patches around his gills and face are still there, his tail is continuing to deteriorate and I can't tell if the tips of his fins are getting better or worse..
The metallic color around his gills looks like the color on the rest of his body. It used to be all black so I'm wondering if that color change is just due to him getting more color due to better food and water conditions (during move he wasn't getting as much care as he should have sorry to say :( ) or if he's still sick. Also wonder if he could just be tail biting but worried about the color bleach out in addition to the deterioration.
I tried to take pictures, but I'm afraid the camera I have is less than great through glass.