Small polyp Stony corals, or SPS corals as they are often called in the hobby. SPS corals serve as the main building blocks of the reef. They expand the reef and effectively build a larger ecosystem for other corals. This happens as they grow and build their calcium carbonate skeletons. Although often seen as the most challenging coral species in the hobby, encrusted SPS can be just as easy to maintain as LPS.

At Signature Reef Corals, we believe that aquaculture is paramount. By growing these corals in our facility, we are able to provide you with the highest quality specimens possible so that they grow and reproduce faster and better for you. Rest easy knowing that we farm the vast majority of corals on our site and have been doing so for years. If you ever have any questions or concerns, we're here to help! Here you will find all SPS corals.

Corals are found exclusively in the sea, especially in the tropical belt. There is a difference between soft and hard corals. The skeletons are formed by calcium deposits, as a result of which the coral reefs have arisen. Corals are placed in different categories in which they are divided into sub-categories. The main categories are LPS stands for long polyp stony, SPS stands for short polyp stony and soft corals.

In the coral itself, symbiotic algae live in the polyp cells, which are called zooxanthellae. These provide the intensive colors in the living tissue of the coral. These unicellular algae are seamlessly integrated into the coral's nutrient balance with their photosynthetic metabolism. Depending on the plankton present, the size of the coral polyps can vary greatly. That is why a distinction is made between large polyps (LPS – Large Polyp Stony) and small polyps (Small Polyp Stony). Polyps range in size from fractions of a millimeter to several centimeters. Corals have been around for over 400 million years. Our goal is to continue this.