Have a lemonpeel Angel for about a week. He was doing great when I first put him in and was very active, even during acclimation. Over the last 2 days he has been a lot less active and hanging out towards the bottom of the tank and under rocks. It looks like he is turning a shade of white or has white spots on him. All water parameters are in the normal line. I will attach a picture of him today. Any suggestions or cures? I do not want to lose him. I also have no other tank to move him to.