Rainbow Splice
A variant of Acropora coral (Acropora sp.)

Photo: The original uploader was Elapied at French Wikipedia . · CC BY-SA 2.0 fr
Representative Acropora coral image. A confirmed image of this exact morph isn't available yet.
A two-colour millepora that shows highlighter pink and neon green in the same colony. It began as one branch tip of a pink coral with a tiny patch of green fluorescence, cut and grown out alone.
Other SPS Corals variants
Staghorn / Table Acropora (growth forms)Green Slimer (Acropora yongei)Tricolor / Tricolor Valida (Acropora valida)Pink/Purple Stylophora-tip 'Strawberry Shortcake' (Acropora microclados)Walt Disney (Acropora tenuis)Strawberry Shortcake (SSC) AcroporaOregon Tort (Oregon Blue Tortuosa)Rainbow TenuisRed Dragon AcroporaPink Lemonade AcroporaCali Tort (California Blue Tortuosa)Tierra del Fuego (TDF) AcroporaPikachu AcroporaJason Fox Homewrecker / Miyagi TortPink Cadillac AcroporaWalt DisneyStrawberry ShortcakeWWC Red ShortcakeOregon TortJason Fox HomewreckerTyree Pink LemonadeJackson's Rainbow TenuisRed PlanetMiyagi TortHawkins EchinataGARF BonsaiORA PearlberryCotton Candy TenuisVivid's Bali ShortcakeJF Fox FlameCC Pink Highlighter TenuisMiami OrchidPlum CrazyBlue IrisEthereal AcroGreen PlanetGreen VelvetIce TortLaura's Purple PolypYellow Tip StagPhil's GranulosaPurple NanaPurple PlasmaRose MilleporaStuber StagSolitaryensisLavender StagJoe the CoralFrogskinBlue VoodooBorealisRoscoe's BluePurple MonsterSunset MilleporaSapphire MilleporaSuper Blue TenuisPonape RainbowToxic Green FloridaFruity SpliceRaspberry SpliceBubbleyumForbidden Fruit SpeciosaRocky BalboaCherry BombMai TaiConfetti AcroporaDoctor ManhattanKermit the FrogGlow StickFire DragonPC Rainbow