Common name: Green Fleece Algae

General information

Codium decorticatum, commonly known as Green Fleece Algae, Codium Algae, or Dead Man's Fingers, is a species of marine green algae that is popular among reef aquarium hobbyists for its unique appearance and utility in the tank. This algae is characterized by its dark green color and velvet-like texture, with branching structures that resemble fingers or coral. It is not only an attractive addition to the aquarium but also serves as a natural nutrient exporter, helping to maintain water quality by absorbing excess nutrients like nitrates and phosphates.

Care

Codium decorticatum is relatively easy to care for, thriving in a range of lighting conditions from moderate to high. It prefers strong water movement to mimic its natural habitat and to prevent detritus from settling on its surfaces. This algae can be easily attached to live rock or other substrates using a rubber band or a safe, reef-friendly glue. It is important to monitor its growth, as it can sometimes overtake slower-growing corals or sessile invertebrates if not pruned regularly.

Symbiosis

While Codium decorticatum does not have the same type of symbiotic relationships as some corals or anemones, it does provide a habitat for small invertebrates and microfauna. These organisms find refuge among its branches and contribute to a diverse and balanced ecosystem within the aquarium.

Habitat

In the wild, Codium decorticatum is found in a variety of marine environments, from shallow intertidal zones to deeper subtidal areas. It is commonly seen attached to rocks, coral rubble, or other hard substrates. This adaptability makes it a versatile choice for different types of saltwater aquarium setups.