Carnation Coral

Non-photosynthetic filter feeder — one of the most demanding corals in the hobby. It has no zooxanthellae and must catch planktonic food constantly, so it needs strong flow and multiple daily feedings of phytoplankton and fine particulate foods. Expert keepers only; most specimens starve in regular reef tanks. Photo: Dereck Keats, CC BY 2.0, via Wikimedia Commons.