Please Help! Betta Sick?

I found sushi in the tank wedged between the thermometer and the side of the tank. I got him out, but now he's floating sideways? I thought he was dead, but he's not.... it's TOTALLY bizarre. I don't think it could be the same thing as the goldfish, could it? Bettas BREATHE air... I'm worried about my sushi!

I'm sorry about your fish! I don't have any advice though, sorry. :( But I hope he gets better! Maybe if you have an exotic vet in your area (look in the phone book) you could call them and ask advice? Or a petstore with fish could be helpful. Good luck with your Sushi!