Goniopora

Goniopora also known as "Flowerpot Corals" are another species of LPS(Large Polyped Stony) with daisy like polyps. Very similar to Alveopora(though slightly more difficult to care for), these corals require moderate lighting and water flow to really thrive in a closed system. Give them some room though, as their long sweeper tentacles can wreck havoc on neighboring corals!