Okay, so I've taken another look and I've noticed that he has a few more small holes in his tail fins, they can only be seen when they are spread out, so it's hard to get a good picture.
Right now he is in a one gallon bowl, but i have bigger tanks available
There is no filter
I do have a heater, but I can't control the temperature on it? (might buy a new one)
Right now, the water is somewhere around 73 F
I have three live plants in the tank if that means anything...
I have been feeding him 2-3 Aqueon betta food pellets twice a day (he hasn't been eating them anyway)
I haven't changed the water yet because I have had him for less than a week, but I was planning on changing all the water today
I use the recommended amount of Tetra BettaSafe water conditioner to treat tap water
The only differnce I've noticed physically is the small holes, and sometimes when he rests on the bottom of the tank, he leans to the side against something (plant, edge of tank, cord of heater)
He is swimming around actively and getting air from the surface normally.
Here are some pictures, you can kind of see most of the holes especially in one of the photos.