I was just changing the water in my Betta's one gallon tank. I had put him in the tank, in a little cup to get used to the slight change in water temperature and forgot to put the lid on. I walked away to dump the water from the container I had him in and come back to a "thunk" noise. My tank is above my computer at my desk (I live in a dorm) and he had jumped out and had fallen from the shelf, bounced off my moniter and flopped about on my desk. I carefully scooped him up as quick as I could and deposited him in the tank. He's not looking so well and his fins are really beaten up, especially his dorsal. I'm not sure but I think his side ones are injured. He wasn't moving them at first but I just looked up and he seems to be using them again. Do Bettas heal? Like I said, he pretty much looks like he got into a fight as far as his tail and dorsal fin go. Do you think he'll live?