I just bought a male betta 2 days ago. I have him in a 1 gallon tank currently no heater (water temp is staying around 75) but I'd like to pick up a small heater to get the tank to at least 80 as he does act somewhat sluggish. He spends most of his time sitting in a small plant that I put in the tank but my problem is he isn't eating. I tried pellets and also i've tried flakes. He sometimes ignores the food and other times goes up to it and then swims away from it. I wait a while and then end up taking the food out so it doesn't sit there and rot and pollute the tank. Any thoughts as to why he might not be eating?