Has anyone had experience with their pink spotted watchman goby showing aggression to other burrowing gobies? I want to get a yasha goby for my 22 gallon tank (45 gallon water volume with sump). My pink spot has not shown aggression when my purple Firefish hides/sleeps in his burrow. I just don’t want to make the investment if he will kill it. He is already paired with a tiger pistol shrimp but he does swim in the open sand most of the day. Also do you think I could get a candy stripe pistol shrimp or would the shrimp fight eachother? TIA