Epsom salt treatment is to use 1 teaspoon of epsom salt per gallon. Using an empty gallon milk jug, fill it water, dechlorinate it, add the teaspoon of epsom salt, shake the jug really well, and pour it in a QT container of about a gallon, unless you have a small tank size, like under 3 gallons. Do 100% water changes every day with fresh pre-mixed water.
The above treatment is if the bloat DOES NOT go down after you not feeding him for a couple days.
Yeah I fast my fish on sunday lol no religious reason its just easy for me to remember unless I am conditioning them....
And yes TheBlueBettaFish thats correct, but I suggest premixing it in gallon jugs (makes it easier is all)
And I dont think he has fin rot
Fin rot? Doesn't seem like it, except for a small patch on the top of his cadual fin. Please fill out that form, if you want help with this after his bloat goes away. The only reason we could help without that form was because of the pics.