Cephalopholis argus, also known as roi, bluespotted grouper, argus grouper, peacock hind, peacock grouper, peacock rockcod or celestial grouper, is a fish from the Indo-Pacific which is variously a commercial gamefish, an invasive species, and occasionally an aquarium resident. Its species name comes from its resemblance to the "hundred staring eyes" of the monster Argus in Greek mythology.