Very cool. You guys may have talked me into this. I’m trying to run an invert heavy tank, so that would be a neat addition!The shrimp will not harm anything, I have had a mating pair living in my reef for a few years. They will dig tunnels all over the tank going all the way to the glass in all directions causing the rocks to shift. They also may pile up huge hills of sand but they are very cool and good scavengers.
Also, what awesome goby did you give a photo of? That guy has some amazing color!