I've had my betta a little over 2 weeks now at at first he was fine but it now seems as if he's developing a fin biting problem. I currently am assuming that it is because there wasn't much stimulation in the tank except for some floating elodea and water wisteria. I've since added one of those decor barrels that have a lot of entrances and exits but he doesn't seem interested in it he likes to lay on top of the floating plants near the surface of the water. Am I right to assume that he was just under stimulated? What should I do if he doesn't seem to let up on the biting soon?