He's been on a hunger strike for about 3 weeks now. I put a f/t in his tank, and he just stares at it intently. He has been for the past 3 hours, his head is just a few inches away from it, but he's not going for it. I figured if he wasn't interested he would find something else to preoccupy himself. But what does it mean if he's just staring at it intently?