I have had a porcupine puffer now for about 2 months. He is an awesome fish but is a very picky eater. It seems that the only thing that I can get him to eat is frozen krill. I have tried table shrimp, and a couple of other shrimp. Doesnt seem to want them. I have read that it is important to keep them a diet that not only helps keep their teeth down but to also prevent lockjaw. Looking for different ideas to help this out.