Purple Goniopora CoralHow to Care for Purple Goniopora Coral: (written by Dave Burr) Purple Goniopora Corals (aka Purple Flowerpot Corals) will bring a burst of color and movement to any reef aquarium. They can sting nearby corals so leave a few inches between Gonioporas and other corals. Clownfish will often host Flowerpot Corals if there is no Anemone available. Flowerpot Corals make a good choice for reefs that house Angelfish since Angels rarely bother this species.