SPS (Small Polyp Stony) corals are a type of hard coral known for their small-sized polyps and rigid calcium carbonate structures. They're admired for their stunning colors and diverse forms, ranging from branching to encrusting shapes. In aquariums, they demand specific care, including high-intensity lighting, consistent water parameters, and moderate to strong water flow. SPS corals are essential in natural reef ecosystems, contributing to reef building and providing habitats for various marine life. Their care complexity makes them a favorite challenge for advanced aquarists.