Common name: Elephant Ear Sponge

General information

The Elephant Ear Sponge, scientifically known as Collospongia auris, is a fascinating marine invertebrate that adds a touch of natural beauty and biological diversity to a reef aquarium. This species is part of the Demospongiae class, which comprises the majority of sponges. The name 'Elephant Ear' derives from its distinctive shape that resembles the ear of an elephant.

Care

Caring for Collospongia auris requires a well-established aquarium with stable water conditions. They thrive in moderate to strong water flow which facilitates their filter-feeding habits. It's important to ensure that they are not placed in direct, strong light as they prefer more subdued lighting conditions. They feed on microscopic food particles suspended in the water, so a mature tank with a good population of plankton is beneficial.

Reproduction

Reproduction in Collospongia auris is both sexual and asexual. Sexual reproduction involves the release of sperm into the water column, which then fertilizes eggs in other sponges. Asexual reproduction occurs through budding or fragmentation, allowing pieces that break off to grow into new individuals.

Symbiosis

While Collospongia auris does not have notable symbiotic relationships like those seen in clownfish and anemones, it plays a crucial role in the ecosystem by filtering water and providing habitat for a variety of microorganisms.

Habitat

Collospongia auris is typically found in the Indo-Pacific region, attached to substrates in reef environments. They are often located on reef slopes or in lagoons, usually at depths where light is less intense but water flow remains constant.