My new Betta is STRESSEd..help !!!!?

My new betta fish was bought two days ago. He is in a 3 liter tank--tap water with water conditioner added. The water Temperature is 84*. Well, My new betta is very inactive, floats still in the corner and his fins are not spread apart. He only swims when I disturb him to see if he's alive and he spazes every... show more My new betta fish was bought two days ago. He is in a 3 liter tank--tap water with water conditioner added. The water Temperature is 84*. Well, My new betta is very inactive, floats still in the corner and his fins are not spread apart. He only swims when I disturb him to see if he's alive and he spazes every now and then.Then he goes back to his spot again in the corner gasping for air and still. I have no idea why this is happening to my new pet. He doesn't eat either. Hasn't eaten in two days. ugh. it's sad seeing him floating still in the corner forever. HELP Me!!!!
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