Common name: dead man's fingers

General information

Dead Man's Fingers, scientifically known as Alcyonium digitatum, is a species of soft coral that is quite popular among marine aquarists. This coral is known for its unique appearance, resembling a cluster of thick, fleshy fingers or lobes extending from a central base. The coloration of Alcyonium digitatum can vary from white to orange, red, or yellow, depending on environmental factors and diet.

In the wild, these corals are often found in cooler waters and are native to the North Atlantic Ocean, including the coasts of the United Kingdom and Ireland. They are a hardy species that can tolerate a range of conditions, which makes them suitable for aquarists of different experience levels.

Care

Dead Man's Fingers requires moderate care in a home aquarium. They thrive in tanks with moderate to strong water flow and low to moderate lighting. It's important to provide them with a stable environment, as they can be sensitive to rapid changes in water quality. Regular feeding with planktonic foods or finely minced seafood can help maintain their health and promote growth.

Symbiosis

While Alcyonium digitatum does not have the same type of symbiotic relationships as clownfish and anemones, they do provide a habitat for a variety of marine life. Small invertebrates, such as amphipods and copepods, may take refuge among the coral's branches, and in turn, help keep the coral clean by feeding on detritus.

Habitat

Dead Man's Fingers are typically found in subtidal zones, often forming dense aggregations on rocky substrates. They are commonly seen at depths ranging from the intertidal zone down to about 50 meters. These corals prefer cooler water temperatures and are often found in areas with strong currents, which provide them with a steady supply of plankton for feeding.