Common name: Spirastrella Sponges

Spirastrellidae is a family of marine sponges found in a variety of reef environments. They are characterized by their hard, often encrusting form and can exhibit a range of colors. These sponges are filter feeders, playing a crucial role in nutrient cycling within the reef ecosystem. They are relatively easy to care for in captivity, requiring moderate water flow and good water quality to thrive. Spirastrella species are known for their symbiotic relationships with various microorganisms, which can include cyanobacteria and other bacteria beneficial to the reef tank's biological balance.

1. Common name: Star Sponge

   Scientific name: Diplastrella megastellata
2. Common name: Red Encrusting Sponge

   Scientific name: Spirastrella coccinea
3. 
   Common name: Red Sponge

   Scientific name: Spirastrella cunctatrix