I have had my Betta for about 3 months now. I started him in a 1 gallon tank without any filtration system but I've then (about October 1st, so 1 month after being in the first one) moved it up to a 2 gallon tank for the past 2 months and that is when I began to notice the tips of his fins curling. In the past months his fins have been slowly turning completely blue, but before they were almost 70% white. I also noticed the white spots are a bit pink also. He has never been aggressive and I've never seen him flare up. I use water conditioner when changing the water and his roommate is a gold mystery snail that I got at the same time as I got the second tank. He was more active in the first smaller tank than now so I'm a bit worried I am doing something wrong I'm trying my best but I don't have any experience prior to him. I don't keep him in direct sunlight and I feed him 5-7 pellets a day. He's never bothered the snail. They seem to just ignore each other. & I've always used tap water and water conditioner. Oh and I forgot to mention that i am not sure if I should try aquarium salt because of my snail. And the tank I have now has "under gravel filtration" to provide oxygen and keep the water circulated. His tank is also always kept at about 78-80 degrees Fahrenheit.