Diamond Watchman Goby (Valenciennea puellaris)

A pearl spotted sand sifter that constantly sieves the substrate, keeping the sand bed clean and turned over. Reaches about 6 inches and needs an established tank of 30 gallons or more with a deep, fine sand bed plus supplemental feeding so it does not starve. Reef safe, though it can dust low sitting corals with sand. Care level: easy to moderate.