Darryl Craig's close up photo of his Tiger Sleeper Goby (Valenciennea wardii), submitted for entry in an About Saltwater Aquariums Photo Contest.
The Tiger Sleeper Goby is a great little Reef Tank Safe Sand Sifting Goby. Sand Sifting Gobies plow through the tank substrate, sifting/straining algae, detritus and uneaten food from the sand. This not only removes unwanted nitrate producing substances, it also stirs and aerates the sand (very important for Deep Sand Beds), releasing toxic gases.