Common name: Lime Green Algae

General information

Amphiroa fragilissima, commonly known as Lime Green Algae or Branching Coralline Algae, is a species of red algae that is popular among reef aquarium enthusiasts for its attractive appearance and benefits to the reef ecosystem. This species is characterized by its calcareous branches, which can vary in color from pink to purple, and its ability to grow in a variety of conditions. It is often found encrusting on rocks and other hard substrates in the wild.

As a coralline algae, Amphiroa fragilissima plays a crucial role in the formation and maintenance of coral reefs by contributing to the reef structure through its calcification process. It also competes with nuisance algae for space and resources, helping to keep the latter in check within the aquarium.

Care

Caring for Lime Green Algae is relatively straightforward. It requires stable water conditions with adequate levels of calcium and alkalinity to support its calcification. Moderate to high lighting and water flow will mimic its natural environment and promote healthy growth. It is important to maintain these parameters consistently to prevent bleaching or die-off.

Symbiosis

While Amphiroa fragilissima does not have the same type of symbiotic relationships as some corals or anemones, it does provide a habitat for a variety of microfauna. Small invertebrates and beneficial bacteria often inhabit the branches and crevices of this algae, contributing to the overall biodiversity and health of the aquarium ecosystem.

Habitat

Amphiroa fragilissima is found in tropical and subtropical oceans around the world. It typically grows in shallow waters where it receives plenty of sunlight, often on reef slopes or in lagoons. Its ability to withstand various conditions makes it a versatile species for aquarists looking to add a touch of natural beauty to their tanks.