I've found that to be the case with all wolves I've kept. Erythrinus were the most sensitive though. But yea I caught him swimming up too a few times today, but he goes down when I get close. Hopefully he learned his lesson though so it doesn't happen again, and now the waiting game, see when he gets used to me lol. Took my curu months.I've found my golds in similar condition. They heal really fast. Very hardy fish.