Common name: Feather Algae

General information

Caulerpa sertularioides, commonly known as Feather Algae or Sertularioides Caulerpa, is a species of green macroalgae that is popular among reef aquarium hobbyists for its attractive feathery fronds and ease of care. This species is part of the Caulerpaceae family and is known for its ability to grow rapidly under the right conditions, which can be both a benefit and a challenge in a reef tank setting.

Care

Feather Algae requires moderate lighting and a stable environment to thrive. It prefers strong water movement to mimic its natural habitat and to help keep detritus from settling on its fronds. Regular pruning is necessary to prevent it from overgrowing and potentially overtaking other sessile organisms in the aquarium. It can absorb excess nutrients, such as nitrates and phosphates, which can help improve water quality.

Symbiosis

While Caulerpa sertularioides does not have any specific symbiotic relationships in the aquarium, it can provide a microhabitat for small invertebrates and fish fry, offering them protection and food sources.

Habitat

In the wild, Caulerpa sertularioides is found in shallow, tropical marine environments, often in areas with strong currents. It is a benthic species that attaches to substrates such as rocks, sand, or other hard surfaces.