Common name: Kidney-shaped sponge

General information

Chondrosia reniformis, commonly known as the Reniform Sponge, is a marine invertebrate belonging to the phylum Porifera, which encompasses all sponges. This species is notable for its smooth, kidney-shaped body and its ability to produce a hard, chitin-like substance. Unlike many other sponges that have a more fibrous or porous texture, the Reniform Sponge has a dense, rubbery consistency, which is unique among its kind.

Care

In the aquarium, Chondrosia reniformis requires a stable environment with moderate to low water flow and good water quality. It is a non-photosynthetic species, meaning it does not rely on light for its nutrition. Instead, it feeds on dissolved organic matter and microscopic particles in the water column, which it filters through its body. Regular feeding with fine particulate foods can help maintain its health in a captive setting.

Reproduction

Reproduction in Chondrosia reniformis can occur both sexually and asexually. Sexual reproduction involves the release of sperm and eggs into the water column, where fertilization takes place. Asexually, this sponge can reproduce by budding, where a part of the sponge breaks off and develops into a new individual. In an aquarium, asexual reproduction is more commonly observed.

Habitat

Chondrosia reniformis is found in the Mediterranean Sea and adjacent Atlantic areas. It typically resides on rocky substrates and in seagrass beds, often at depths where light penetration is reduced. In the aquarium, replicating its natural environment by providing a rocky setup with ample hiding places can help this sponge thrive.