This is my Betta Odin. I've only had him three days- I bought him from one of those cup sized cages at my local pet shop. He was hardly moving so I decided to get him (not really knowing the first thing about looking after betta) Luckily my friend who has a betta fish helped me out. Odin is now set up in a heated, filtered 5 gallon tank. There were a few other betta similar to him in colour at the pet shop so he is proably a pretty common type, but I like the way his colours change in different lights. Is he a veiltail?
Also, I am worried he might have fin rot. After looking at some of the other pictures of Bettas on this page, their fins look to be in better condition. He looked this way when I bought him, and had quite a large tear on his fin that seems to be healing but the edges look a bit curly...Sorry if this is not the right place to ask about Betta health...and for the million questions!