Common name: Turtle Weed

General information

Chlorodesmis fastigiata, commonly known as Turtle Weed or Green Fuzzy Algae, is a species of green macroalgae found in tropical reef environments. It is characterized by its bright green, tuft-like appearance and is often seen growing on dead corals or rubble. Turtle Weed is not just an ornamental addition to the reef aquarium but also plays a role in nutrient export, helping to maintain water quality by absorbing excess nutrients such as nitrates and phosphates.

Care

Turtle Weed is relatively easy to cultivate in a reef aquarium, provided it receives moderate lighting and water flow. It does not require substrate, as it can attach itself to rocks or other surfaces. Regular pruning is recommended to prevent it from overgrowing and potentially shading other photosynthetic organisms. It's also important to monitor nutrient levels, as excessive growth can indicate an imbalance in the aquarium.

Symbiosis

Chlorodesmis fastigiata has a notable symbiotic relationship with certain reef fish, particularly the Surgeonfish family (Acanthuridae). Surgeonfish often feed on this algae, and in return, Turtle Weed benefits from the pruning, which helps prevent overgrowth and promotes better water flow and light penetration.

Habitat

This species is commonly found in the Indo-Pacific region, thriving in shallow waters where it forms dense mats on hard substrates. It is a hardy species that can adapt to a range of conditions within the reef environment, making it a suitable choice for aquarists seeking to add a natural and functional element to their tanks.