Go me a tiger pistol shrimp and goby pair, they were together at the lfs out in the open, working on their cave....when i put them into my display they got separated for a couple days but rejoined shortly after. they now have a new home together, and will. not. come. out. of. it. unfortunately i only get to observe this treat with a flashlight and a crooked neck. i would love to find out exactly what they are afraid of....