Well, the more space, the better, but as Darth Scohin said, this applies to all fish. Really, I think your tank would be fine for just three of them. Personally, I don't think balas would be very appealing in a pond, they are much more interesting when viewed from the side rather than the top (if you're looking at them from the top, then you may as well just have a pond full of regular native minnows, imo).Ponddigger;4379129; said:so ok the pond idea is better for the fish
Imo, 5 would be overstocked once they are all 14"+Experiment397;4379221; said:you could do 5 but that is with no tankmates, with tankmates you could go 3, but really a 125 6'x2'x1.5' would do better for them
It's hard to tell without the rest of the dimensions given, but 2' is a little shorter than a standard 150 gallon tank, which means that it should have a slightly bigger footprint, so it may work, but I can't tell you for sure without the other dimensions (or its other dimension, if it has a circular footprint).Ponddigger;4381859; said:im not sure but its about 2' high thats all i know