Yesterday out of the blue one of my bettas(one in the avatar) starting acting really bizzare. First he adruptly swam up to the top and started taking huge gulps of hair. And ever since then he's been sitting on the bottom, occasionally going up and sitting on leaf, with his head pointed up and his tail arched in the air. His gills are bright red and flared looking. He hasn't been active at all. Just sits there in that position. Anyone have any clue what this might be?