Aggression between dragonet/mandarin gobies?

Good morning!
I've had my spotted mandarin for over a year now, and he's one of my absolute favorite fish. I also really like the look of red mandarins and was wondering if anyone thought my current mandarin would attack the new comer? They'd be in a 180g with a refugium. I'm not overly worried about pods since my current guy eats frozen.
Thanks!