Common name: Killer alga

General information

Caulerpa taxifolia is a species of green algae that is popular in the aquarium trade for its attractive feather-like fronds and ease of care. It is often referred to as 'Killer Algae' due to its invasive nature in non-native environments. This species is known for its rapid growth and ability to outcompete native flora, leading to significant ecological impacts in regions where it has been introduced.

Care

In the aquarium, Caulerpa taxifolia can be a useful nutrient exporter, helping to remove excess nitrates and phosphates from the water. It requires moderate lighting and can be easily propagated by fragmentation. However, it is important to regularly prune and control its growth to prevent it from overtaking the tank and outcompeting other species.

Symbiosis

While not known for hosting or forming direct symbiotic relationships with marine animals, Caulerpa taxifolia does provide a habitat and refuge for small invertebrates and fish within the aquarium.

Habitat

Caulerpa taxifolia is found in tropical and subtropical oceans worldwide. It typically grows on rocky substrates and can be found at various depths, often forming dense mats that can dominate the benthic environment.