Common name: Octopus coral

General information

Galaxea fascicularis, commonly known as Galaxea Coral or Starburst Coral, is a species of large polyp stony (LPS) coral that is popular among reef aquarium hobbyists for its striking appearance. It has long, sweeper tentacles that can extend several inches at night to capture food particles from the water column. The coral exhibits a variety of colors, often with a contrasting color at the tips of its tentacles.

Care

Galaxea Coral requires moderate to high lighting conditions and moderate water flow within the aquarium to thrive. It is important to provide ample space between Galaxea and other corals, as its long sweeper tentacles can sting and damage neighboring corals. A diet supplemented with planktonic foods can promote growth and vitality.

Symbiosis

While not known for a specific symbiotic relationship like clownfish and anemones, Galaxea Coral does host a variety of microfauna within its structure, which can contribute to the overall health of the reef ecosystem in an aquarium.

Habitat

Galaxea fascicularis is found in the Indo-Pacific region, typically in shallow reef environments. It prefers areas with strong lighting and some water movement, which are conditions that can be replicated in a home aquarium for successful cultivation.