My Bettas fins are all ripped up! There is nothing in his tank that could do such damage, its not so bad that thier shredded, he just has holes in them and little rips at the ends! I am sure there is nothing that could rip his fins, I have gravel at the bottom. . . a couple smooth rocks. . . and a shell, but i sanded its edge and it is very smooth. Also, he is in a tank by himself so no fish could be nipping at him. Is there anything I could give him that could repai his fins, and what do you think is causing it?