NPS or Non-Photosynthetic Stony corals are corals that do not have zooxanthellae to photosynthesize for their nutritional needs and therefore require feedings of meaty foods such as shrimp, fish and/or clams. They are considered a high maintenance coral and their feeding needs should be taken in to consideration if you choose to keep these stunning corals.
The most commonly seen NPS corals are “Sun Corals” from the genus Tubastraea or “Dendro’s” from the genus Dendrophyllia. Most are a bright yellow or orange color but are also sometimes black in color. Their feeding tentacles many times at first will stay retracted for the first few days, but once a feeding schedule is adopted their tentacles will usually stay out all the time.