Common name: corky sea fingers

General information

Briareum asbestinum, commonly known as the Gorgonian Corky Sea Finger or Purple Corky Finger, is a species of encrusting gorgonian coral found in the Caribbean Sea. It is known for its distinctive purple coloration and finger-like projections that rise from a mat-like base. This coral is a popular choice among reef aquarium hobbyists due to its hardiness and unique appearance.

Unlike many other gorgonians, B. asbestinum does not have a rigid structure. Instead, it forms a flexible, encrusting mat that can cover rocks and other surfaces in the aquarium. It is a photosynthetic coral, hosting symbiotic algae known as zooxanthellae, which provide the coral with nutrients through photosynthesis.

Care

Briareum asbestinum is considered a hardy species that can thrive in a range of lighting conditions, from moderate to high intensity. However, it does best under actinic lighting, which can enhance its vibrant purple coloration. Adequate water flow is also essential to prevent sediment accumulation and to provide the coral with necessary nutrients and gas exchange.

This species is not particularly demanding regarding water chemistry, but stable conditions and regular water changes are beneficial. It can propagate easily in the home aquarium, often spreading over rocks and other surfaces.

Symbiosis

While B. asbestinum does not have the same level of symbiotic relationships as some other corals or invertebrates, its mat-like growth can provide shelter and habitat for small invertebrates and microfauna within the reef aquarium.

Habitat

In the wild, Briareum asbestinum is typically found in shallow waters of the Caribbean Sea, often in areas with strong currents. It can be seen encrusting over rocks and dead coral, forming extensive mats that contribute to the reef structure.