Common name: red boring sponge

General information

Cliona delitrix, commonly known as the Red Boring Sponge, is a species of demosponge found in tropical and subtropical waters. It is known for its ability to bore into calcareous substrates, including coral and shell material, using chemical and mechanical means. This sponge is characterized by its bright red to orange coloration and its network of excavating channels, which can be quite extensive.

Care

In the aquarium, Cliona delitrix requires stable water conditions with moderate to strong water flow to mimic its natural environment. It is important to provide a source of calcium carbonate, such as live rock, for the sponge to bore into and establish itself. This species is not photosynthetic and relies on water flow to deliver nutrients and remove waste products.

Reproduction

Reproduction in Cliona delitrix is both sexual and asexual. Sexual reproduction occurs through the release of gametes into the water column, while asexual reproduction can happen through budding or fragmentation. In an aquarium setting, asexual reproduction is more common, allowing the sponge to spread across suitable substrates.

Symbiosis

Cliona delitrix has a notable symbiotic relationship with certain microorganisms, including bacteria and single-celled algae, which reside within its tissues. These microorganisms may assist in the sponge's boring activity and nutrient acquisition.

Habitat

The Red Boring Sponge is typically found in shallow reef environments, often in areas with abundant sunlight, although it does not photosynthesize. It is widespread in the Caribbean Sea and can be found at depths ranging from the intertidal zone to about 20 meters.