Common name: An encrusting coralline alga

General information

Lithophyllum incrustans is a species of red algae known for its hard, encrusting growth form and its role in the marine environment as a reef builder. This coralline algae is characterized by its purple to pinkish hue and its ability to deposit calcium carbonate within its cell walls, contributing to the structure and stability of coral reefs. It is often found in the intertidal zones and can cover rocks, shells, and even other corals, forming a crust-like layer.

Care

In the aquarium, Lithophyllum incrustans requires stable conditions with adequate levels of calcium, magnesium, and alkalinity to support its calcification process. It thrives under moderate to high lighting and with strong water movement, which helps to deliver nutrients and remove waste. This algae can be a beneficial addition to a reef tank, as it competes with nuisance algae for space and resources, often preventing their growth.

Symbiosis

While Lithophyllum incrustans does not have the same type of symbiotic relationships as some corals or anemones, it plays a crucial role in the ecosystem by providing a substrate for other organisms. Various invertebrates, such as mollusks and crustaceans, may use the algae's hard surface for attachment or as a protective habitat.

Habitat

Lithophyllum incrustans is commonly found in the Atlantic Ocean, from the intertidal zone down to depths where light can still penetrate and support photosynthesis. It is a hardy species that can withstand a range of temperatures and salinities, making it a versatile organism in the wild and in captivity.