The common bluestripe snapper (Lutjanus kasmira), bluestripe snapper, bluebanded snapper, bluestripe sea perch, fourline snapper, blue-line snapper or moonlighter, is a species of marine ray-finned fish, a snapper belonging to the family Lutjanidae. It is native to the Indian Ocean from the coast of Africa and the Red Sea to the central Pacific Ocean. It is commercially important and tried to get as a game fish. It can also be found in the aquarium trade.