Lights, Camera, Shrimpgoby!

Well, I've been trying to get better photos of the new pair (that would be the Shrimp & Shrimpgoby) in Surfquarium, but today I managed to get a nice video of the Pistol Shrimp (Alpheus randalli) hard at work, and the Black-Rayed Shrimpgoby (Stonogobiops nematodes) standing guard and keeping a watchful eye out for sharks. In case it is not clear from the video, the shrimp is doing some excavation work on one of the tunnels the pair occupies and the shrimpgoby is standing guard in case trouble should arise. From what I've read, the shrimps are nearly blind so the shrimpgoby needs to be the watchman and acts as the first line of defense despite the menacing claws on the shrimp. In return for security services, the shrimp gives the shrimpgoby a house to live in and does all the maintenance work. Not a bad trade-off.