My poor boy is on his deathbed right now, and I'm debating whether I should put him out of his misery or not. I got him at Wal-Mart over two years ago, so it is most likely old age. He has lived in a 1 gallon vase the entire time, with some guppy grass and weekly water changes. Last night I noticed that he was laying on the gravel, not movnig. He moves if I turn the vase, but he hasn't come to the top yet as far as I can tell. He is still breathing, but barely. Don't bettas have to come to the top for air? Should I let him go or put him out of his misery?