Ok, but what are you going to do when it outgrows the 125? Buy another tank?
I suggest either trading it for your RTG, or sticking with just the Yellow and hold off on the RTG until you can properly house both fish.
I suggest either trading it for your RTG, or sticking with just the Yellow and hold off on the RTG until you can properly house both fish.

tanks seems a bit small for two i have two large silvers in a large tank but they paired off when they were young i would not nrecomend adding anouther arrow they will end up fighting