Tubastraea

[1] Different species have polyps in a variety of colors, including yellow, orange, and shades of black.

[3] T. coccinea is an invasive species that was documented to have spread as far north as the Florida Keys National Marine Sanctuary in 2004.

After fertilization, the female corals will carry the eggs as the offspring develop within her gastrovascular cavity and are released as larvae.

After being released, the larvae disperse and eventually settle on rocky seafloors "cementing" their skeletal structure to a rock.

The largest challenge of keeping these - and any other non photosynthetic - corals is maintaining water quality with all the food they require.