my new arowana (5") who has only been in my tank for about 4 days now is still pretty skittish. is it normal for smaller aro's to seem skittish and weird when people including me still approach the tank. when im lying down in bed and not moving too much he seems fine .. skimming along the top of the water but when i stand up/approach closer to the tank at all he starts darting around the tank to whatever side im not closer to and sometimes rapidly keeps trying to jump. ive been trying to leave him alone as much as possible but still need to feed the bichirs etc. the seond day i got him he was eating flakes .. the pellets i had werent floating so by the time he calms down they are already on the bottom of the tank so i threw in some pellets that would stay on top longer and when he almed down he started eating them (eating certain ones and spitting others out?) he doesnt seem to be doing too bad in there .. with a 30" height so far it barely seems like the aro and bichirs know each other exist. so is this behaviour from the aro normal and how long will it generally take for him to calm down?