hi, my friend and i were talking the other day and we got on the topic of silver aro's, he has a 180 gallon, and i have a 70 gallon, he has his 180 stocked with big cichlids, and big catfish, and i only have a 7inch, clown knife in my 70, he wants a silver aro, so my question is, how long could i house a baby silver aro, 4inchs? in my 70? and what would i feed him, i think they look cool, but i never really read that much into them, so any and all help would be greatly appreciated