So I have two Gobi a Diamond watchman and yellow watchman ( yellow is new) and they seem to be best buddies or brothers in arms. Is that normal behavior ? I thought they would have taken to different sides of my small tank but they are hanging out in the same cave.
I recently added a second Diamond Goby and a Blue Cheek Goby to my 600L tank. They get along fine with the original Diamond Goby and Yellow Watchman Goby/pistol shrimp. The new Diamond immediately shared their cave network. The Blue Cheek found another cave and shared it with an engineer goby. Sometimes the lawnmower blenny kicks the Diamonds out, but is chased away by very audible pistol shrimp snaps. It’s fun to watch.