I spend some time infront of the tank and want to show you the results:
This is "right" infront of his home until last night:
Sometimes the gobie goes up 2-4 cm on the rocks, but never leaves the sand
"Left" is much more shy and does not like to pose for the camera:
I added a few day ago 4 more Alpheus randalli and should now have 2 of the red / white coloration and 4 of the red / yellow coloration. Since that "left" has his pistol shrimp too and gained much more confidence. Both of them are also more out during the daytime now and feed on frozen mysis.
Here they are together now on the left side of the tank.
In interaction the switch the middle part of the body white to impress other fish and even their own kind. Also note the open mouth of "right"
As my file fish is bothering the Alpheus they are shy - and he is not willing to be catched, but I keep on trying. Here the shrimp is securing the area
And a second later cover by a sand storm caused by the little alpheus which you can see in the background
I hope you enjoy the pictures!