I introduced a Randal's goby with his candy cane pistol shrimp in my tank a few weeks ago. Within a day my Yasha's goby had abandoned his pistol shrimp and taken up residence with the Randal's goby under the rock my GSP are on. I had no idea there was a hole in the rock till today when he and his new shrimp popped out of it. Haven't seen the Randal's or the old pistol for about a week. Hope they find each other.
Hiya, I've got a barred goby and another one, can't remember which and they're always switching out tunnel systems. At least I think they're separate. I've got two tiger pistol shrimps..not sure if they're attached to a certain goby or if they care which one they're working with. I can go days without seeing one or the other, but I eventually see them both. Kim/Benton, AR