Yellow Finger Octocoral, Diodogorgia nodulifera, also called the colorful sea rod, is a deep-water, non-photosynthetic octocoral found off South Florida (and elsewhere in the Caribbean). There are two color phases of this species, this yellow phase and a red phase not pictured. Both have white polyps and both are pretty hardy. The yellow phase seems to get bigger, sometimes 10 inches high, but the red phase seldom gets more than 6 inches high. As with all non-hotosynthetic corals, you will need to feed them some sort of micro food, and it may need to be done at night. They will do best if the lighting is not very intense, so maybe find a shady place in your tank. They also like strong currents, so try to place them in an area that gets moderate to strong water flow.