Don't worry about him. After a tank move, sometimes eels can go up to two weeks or slightly more without eating. I have a SNE, and when I first got him it was well over a week before he ate. I also had a tessalata that I just sold over the weekend and when I first got him it was 2 weeks before he'd eat. Just try to feed him everyday and if he refuses it, try later that day. I just moved my 55 gallon into my 180 now that my tessalata is gone, and my SNE still hasn't eaten. It's been 5 days. I don't worry about him. I know he'll eat when he's ready to.