My betta was spooked when I turned off my light and flipped out of his tank onto a table. I as gently as possible put him back into his tank and proceeded to watch him to make sure he was okay. As I watched him I noticed him using only one of his pectoral fins to swim, I thought the other might have been ripped off during his accident which I soon discovered was not the case because a little while later I noticed him using both fins. He is swimming normally but is not fond of using his right fin anymore. When he does use it, it looks to be working fine and he is swimming normally. So, any thoughts? Suggestions?