The ARTC will most likely destroy it. It'll be gradual, but he'll pick on the SARTC constantly when the lights go out. I had mine together with a TSN, everything was fine for awhile and then one morning I woke up and the TSN had a bite mark. The ARTC was out of the tank in a matter of seconds.
He's going to his new home today actually.
Seriously though, the ARTC is a one fish per aquarium type...unless you're rocking out thousands of gallons and plenty of hiding spaces for whatever else is in there with him.
They wear down fish, beat up fish, bite fish until they die unlike most cats that just swallow things hole and won't eat it if they can't get it in their mouths.