I have been researching this fish for a future purchase. I see that feeding this fish is no problem. But the question is about the teeth. I know they say to put food on a LR with a dimple in it to help with the problem of the teeth. If you use frozen food how do you keep it from floating off? They say also to feed him mussels with the shell to help. Now is that mussel from the local market or do I have to order them special from one of our sponsors? My wife is the one that has fell in love with this puffer, but I want to get the kinks worked out first. Thanks Mike:fish: