Common name: Sargassum polyphyllum

General information

Sargassum polyphyllum, commonly known as Leather Fern Algae, is a species of brown macroalgae found in tropical and subtropical oceans. It is part of the Sargassaceae family and is known for its distinctive morphology, resembling small ferns. This species is not to be confused with the free-floating sargassum commonly associated with the Sargasso Sea. Instead, Sargassum polyphyllum attaches to rocks or coral substrates via a holdfast.

Care

Leather Fern Algae requires moderate to high lighting and some water movement to thrive in a reef aquarium. It is a hardy species that can adapt to a range of conditions but prefers a stable environment with consistent water quality. It can be a beneficial addition to the tank, as it helps with nutrient export by absorbing excess nitrates and phosphates.

Symbiosis

While not hosting a wide array of symbiotic relationships like some corals or anemones, Sargassum polyphyllum does provide shelter and food for small invertebrates and juvenile fish. Its dense structure can be a haven for copepods and amphipods, which are essential for a natural food chain in the aquarium.

Habitat

Sargassum polyphyllum is typically found in shallow waters, often in areas with strong currents which provide the necessary nutrients and gas exchange. In the wild, it can be found growing on rocky substrates, coral rubble, or even mangrove roots, indicating its adaptability to different types of environments.