Common name: Lesser knob coral

General information

Cyphastrea chalcidicum, commonly known as Chalice Coral, is a species of small polyp stony (SPS) coral that is popular among reef aquarium hobbyists for its vibrant colors and relatively easy care requirements. This coral is known for its encrusting growth form, which allows it to spread over rocks and other surfaces in the aquarium, creating a colorful, textured landscape.

Care

Chalice Coral is considered a good choice for intermediate aquarists. It requires moderate lighting and water flow to thrive. While it can tolerate a range of lighting conditions, from moderate to high, it is important to acclimate it slowly to the lighting in your aquarium to prevent bleaching. Stable water quality with appropriate levels of calcium, alkalinity, and magnesium is crucial for its growth and coloration.

Symbiosis

Cyphastrea chalcidicum does not have any specific symbiotic relationships that are notable in the context of home aquariums. However, like many corals, it hosts zooxanthellae, symbiotic algae that live within its tissues and provide the coral with nutrients through photosynthesis.

Habitat

In the wild, Cyphastrea chalcidicum is found in a variety of reef environments, often in shaded areas or on vertical surfaces where it can avoid intense direct sunlight. It is typically found in the Indo-Pacific region, including the Great Barrier Reef, the Red Sea, and the central Pacific.