You would be able to get away with possibly having success with 3 in that size of a tank. That would be one of the good aspect of having a tank that large, the possibility of taking on such an experiment. If you put alot of pygos in there, you would have one HELL of a feeding bill. Im sure that many P's could go through a FEW chickens or a FEW whole fish daily. Im sure you would be spending more money to feed your fish, then your whole family spends on food per day. Not something easily undertaken. Personally if I had a tank that large, I would look into salt water, perhaps getting 2 sharks. I have seen those tanks before, and the kick ass.Cypher said:I wonder if you could shoal rhoms in that... they must co-exist in the wild..