Hmm, technically he could eat more than 1 asf a week, but I'm not sure it's because he's hungry. I'm guessing it was a fluke. Usually if they are nasty, they are nasty from day one. My ph clown has been nasty since he came out of his egg. He flew to me from Robin, rabernet, about two years ago and he still hisses at me every time he sees me. I have had one that turned into a nippy thing, but he's my spider and he has needed a trip to the loony bin for a while now. I wouldn't worry about it! Maybe he thought it was feeding day for some reason.