ok so my 5" baby silver doesnt eat and he's in a 55gallon tank and i was wondering if i can move him to my 200 gallon tank with 4 pacus? 3 of them are small abt 6" and the other is abt 12" they eat anything but wierdly not the baby feeders in the tank it was grown for the arowana bt they dont eat them. can i put my arowana in the tank?? what do you think?