It took a little while to ID this pair of Redbarred Shrimp Gobies (Amblyeleotris sp.) because the photo of them in the ID book has much more muted colors than this pair is exhibiting. They are tough to find more specifics online because I do not have a full species name (note the “sp.” in the scientific name which indicates it is not officially classified yet). I did find one online pet store that seemed to have a photo of these same fish, and their description matches pretty well too, but beyond that I start getting conflicting information for other species.
I also managed to get some photos of their symbiotic burrow dweller, which is possibly a Tiger Snapping Shrimp (Alpheus bellulus). The body coloration matches pretty well, but the claws are a bit obscured in these photos. However, if you look closely, you can see that in both photos, the shrimp is pushing a rock out of the burrow. Comparing the size of those rocks to the size of the shrimp, it almost seems accurate to call them “boulders”!