My bad on the name, I just copied from my cert. But I am not wrong abt them being essentially the same fish. What I know is not from wiki where it writes indonesia as the first farms when in fact Singapore was the first to successfully breed Asian Aros in 1969. Truth is there wasn't a difference between RTG and XB before the 90s. What you bought then was a golden aro. Believe it or not it's up to u guys. But I have seen XB fail to fully clear 5th lvl and RTGs that cross 6th almost completely, rare no doubt but not unheard of. U will nv see a PDR reach the lvl of a BD even though they are both P13.