Weird Yellow Watchman Goby Behavior???

[OllieGreen]

Hi, I just added a yellow watchman goby to my new 20 gallon cube yesterday. I also introduced a pistol shrimp. The shrimp is doing great its barely been 24 hours and he has dug tunnels burrows hills and caves throughout my entire tank. I'm worried about the goby however. He arrived a grey/greenish color more than yellow but i believe that was a problem from stress and poor water throughout shipping, he has been regaining color slowly since i introduced him. As expected once he was acclimated and let out he ran right to the bottom and found a place in the rocks to hide, so i didn't suspect anything because i barely saw him. Today he finally realized there was a shrimp there and began his watching duty, and while watching this i noticed hes lethargic sometimes, and doesn't like to move at all unless the pistol shrimp physically moves him or he gets scared by something. When the pistol shrimp does manage to move him sometimes he ends up on his side or turned around really weird. Does anyone know anything?

 

[Biglew11]

Keep an eye on him for a few days. They are sometimes lazy and let the shrimp just push them around.