I have a 5ish inch normal white spotted dog face and want to add a Stars and Stripes puffer from my girlfriends tank and that puffer is only 2 1/2 inches I’m wondering if this is a DO NOT ATTEMPT or a “you could try it and it MIGHT work” this is in a four foot by two foot by two foot hundred gallon with tons of live rock. this isn’t the permanent tank I’m getting a 7x2 1/2 set up for these guys within the next year max. I have egg crate to add to the tank to make a wall to seperate them if things go badly and when introducing initially to see if they fight through it or show aggressiveness. Would you try?