Okay, so I recently got 3 juvie ropes and two of the ropes are absolutley fine living their best rope life, already eating and whatnot... one is chilling at the bottom and hardly moves, just moves from one side of the tank to the other occasionally. He's hanging in there, but he seems to be breathing very heavily. Nitrates are still orange, could that be it? My tank is very aerated, and like I said, no other fish seem lethargic.