Hey yall. We have a larger tank, 180. My inhabitants are on the large size as well, this includes my 3 gobies. I have an engineer, a blue spot, and a pink spot watchman. My blue and pink spot live on opposite sides of the tank and are decent sized. I want to add a mandarin. I'm worried about territorial aggression from my watchmen as they will significantly bigger than the mandarin. Any advice? Is this doable or am I just going to have to dream about it?