Common name: Gold Sponge

General information

The Gold Sponge, scientifically known as Agelas oroides, is a striking species of sponge found in the Mediterranean Sea and adjacent Atlantic areas. It is well-known for its bright yellow to orange coloration and its tubular structure that often resembles a network of conjoined tubes or chimneys. This sponge is a filter feeder, relying on the flow of water through its body to capture food particles.

Care

In the aquarium, Agelas oroides requires a moderate to high flow of water to mimic its natural environment and facilitate feeding. It is important to maintain good water quality, as sponges are sensitive to high levels of nitrates and pollutants. They do not possess the photosynthetic symbionts found in some other sponges, so lighting is not critical for their survival, but it can enhance their natural coloration.

Symbiosis

While Agelas oroides does not have the same type of symbiotic relationships as corals do with zooxanthellae, it does host a variety of microorganisms within its tissues. These microorganisms can include bacteria and archaea, which are thought to contribute to the sponge's nutrition and defense mechanisms.

Habitat

Agelas oroides is typically found in rocky subtidal zones, often in areas with strong currents which aid in its feeding strategy. It can be found at depths ranging from shallow waters to about 40 meters deep. In the wild, this sponge prefers dimly lit environments, which should be considered when placing it in an aquarium setting.