Hello, I have had my eye on 6 geophagus neambi for a few months now and I have decided im going to get the group. I would like to know what people's experiences have been with them (agression,tankmates, and max size). I plan on keeping them in a 72"x18"x24 aquarium with 2 upper jaw bichirs and 1 lower jaw bichir. Thanks in advance.