Common name: Elephant Ear Sponge

General information

The Elephant Ear Sponge, Ianthella flabelliformis, is a large and visually striking species of sponge found in the Indo-Pacific region. It is known for its fan-like shape and can grow to a considerable size, making it a notable addition to larger marine aquariums. This sponge is a filter feeder, drawing in water to extract nutrients, and is an important part of the reef ecosystem.

Care

Ianthella flabelliformis requires a specialized care regimen due to its feeding habits. It thrives in well-established aquariums with strong water flow and high water quality to provide a constant supply of planktonic food. It is sensitive to changes in water parameters, so stability is key. Lighting is not a direct concern for sponges as they do not photosynthesize, but indirect lighting similar to their natural habitat is beneficial.

Reproduction

Sponges like Ianthella flabelliformis reproduce both sexually and asexually. In the aquarium, asexual reproduction through budding or fragmentation is more common. Fragments that break off can attach to a substrate and grow into a new individual.

Symbiosis

While Ianthella flabelliformis does not have the same type of symbiotic relationships as corals do with zooxanthellae, it does play a role in the reef ecosystem by providing microhabitats for various small invertebrates and contributing to the water filtration process.

Habitat

Ianthella flabelliformis is typically found in the Indo-Pacific region, attached to reef structures or overhangs in areas with strong currents. It is often located at depths where light is present but not intense, which can vary depending on water clarity and other environmental factors.