Brevipes may appear to be bushier because it has more form. Arcuata is more delicate looking and should be considered the anorexic brother to brevipes. I've only seen brevipes in high light/co2 conditions, however I grow arcuata in both high and low tech tanks. In a high tech tank arcuata loves to throw roots in an attempt to become bushy, which can be very attractive. In a low tech it takes almost a dwarf like form, with less than two millimeters between each node and no nodal roots. I like this type of growth as well. My 2c :icon_cool