I just added a Twin Spot Goby and an Antenna Goby to my Nanocube. I also have 2 Percula Clowns, a Peppermint shrimp, another shrimp whose name escapes me, a bulb anemone, 3 Turbo Snails, 6 Hermit crabs, and a starfish.
I acclimated the Goby's per the LFS where I got them (not where I normally...