I just got a baby black aro and he is in a 180 gallon tank. He is seperated from all other fish with a tank divider and the water flow in his area is minimal. Water parameters are also good. He has been in the tank for about a week now....eating well, no tattered fins or signs of disease, strong swimmer....but he does something that I am curious about. When he is not chasing down food he sometimes stays stationary, almost leaning, on the tank divider not swimming or anything. This worries me because the silver I used to own never stopped swimming as a baby. Is it a bad sign that my baby black isn't constantly on the move???