I have a small Kole tang and am trying to get him to eat seaweed from a clip. I realize he's a bristletooth tang and prefers to scrape stuff off the walls/rocks but I am worried that at some point he will run out of stuff to graze on. In the meantime, I am trying to get him interested in seaweed. He's not buying. Unfortunately, there isn't anyone else in the tank that is strictly herbivorous so there is no one for him to observe and learn from. Any suggestions?