In my 120 I have 3 Green Chromis, 3 Yellow Tail, 1 Three Stripe, 1 Domino, 1 Blue Reef Chromis, 1 Picasso Trigger, 1 Yellow Tang, 1 Bamboo Shark, 1 Mandrin Goby. I was thinking about getting a small porcupine puffer but from what I hear they will pick on everything and I have a baby shark so I...