OK so some of you know that I put Samuel in his own tank day before yesterday. He hasn't eaten since and at first he kept a dark belly but now he brightens up but then goes back to a dark belly for a few hours then bright again. He swims the tank but kinda hangs out in a corner just hanging out. Not on the sand but close. He isn't breathing heavy and doesn't even look sick at all. It worried me that he is acting so different though. Is he just stressed and it'll take a minute for him to get use to the tank? I thought he might be lonely so I got him a friend today, a TINY percula. What do you guys think?