His eyes are cloudy,may he eat, yes,but when my guys are blue,I won't feed them,just let them be,there not comfortable,that's obvious if he is hissing at you,so why stress him more. Don't stress them,they will be fine to miss a meal..just keep humidity up and mist the tank.. I also mist my guy once he's out of blue..I'll pick him up one time a day and spray him down with a mist,he loves it.