Purple Edged Yellow Spot Slug

Up to 7 cm long (W Indian Ocean specimens). A distinctive species with obvious, enlarged dorsal protuberances on the mantle which contain a concentration of defensive glands. These are prominent to lure predators away from the vital gills and rhinophores, and are a distinguishing feature of the genus. Colour pinky orange with yellow spots, occassionally olive-green, always with violet margins. Habitat: diverse, among shallow coral reefs. Distribution: W Indian Ocean, Red Sea to W Pacific Ocean. In the region C. tenue often coexists with C. trilobatum (Richmond, 1997). Distribution: also known from South-East Asia and tropical Australia (Rudman, 1988).