Hi, I'm new to fish forums and don't know much at all. I've had my very first betta, Dennis, for two weeks. At first he seemed happy but after a couple of days he seemed lethargic and not interested in eating. Most of the time he just stays right below the surface by the edge of the bowl. Every time I give him a pellet he ignores it, by now he hasn't eaten for four or five days. He doesn't look bloated to me but maybe I'm unable to tell (see photo)... I've read about giving him a bath in aquarium salt solution or Epsom salts, should I do that? If yes, how long should he stay in the bath and how much salt should I put in there? Please give me some advice, I don't know what to do. Thank you!