Hi. My Betta "Tiber" has hurt himself again. I've only had him 14 days and he's torn off his pelvic fins and tonight he apparently wedged himself under the rocks and tore off one of his Pectoral Fin (body parts based on this betta biology site > http://www.bettafishcenter.com/Betta-Biology.shtml). He is in bad shape. His body is all swollen from the damage he's done. He can hardly swim at all now. All he's got left is that one Pectoral fin. It is the saddest thing I've ever seen. The tank he is in has had two other betta's in it before him and none of them ever hurt themselves on any of the decorations or rocks. It's like I got the lowest functioning Betta ever. I'm still crazy about him but I can't stand to see him suffer. What is the right thing to do? PLEASE HELP ME HELP HIM. Thanks.