Common name: Hedgehog coral

General information

Echinopora horrida, commonly known as Horrida Staghorn Coral, is a species of small polyp stony (SPS) coral. It is recognized for its distinctive, branching growth form which resembles the antlers of a stag. This coral is appreciated by aquarists for its rugged texture and the dynamic structure it adds to the reef aquarium.

Echinopora horrida is part of the family Merulinidae and is found in various shades ranging from green to brown. It is a hardy species that can adapt to a range of lighting conditions, making it a suitable choice for intermediate to advanced reef keepers.

Care

This coral requires stable water conditions with moderate to high lighting and strong water flow to thrive. It is important to maintain calcium, alkalinity, and magnesium levels within the appropriate ranges to support its skeletal growth. Feeding is not strictly necessary, as Echinopora horrida hosts zooxanthellae algae that provide nutrients through photosynthesis, but occasional feeding with microplankton can promote faster growth and more vibrant coloration.

Symbiosis

While not known for hosting fish or invertebrates, Echinopora horrida, like many SPS corals, has a symbiotic relationship with zooxanthellae, photosynthetic algae that live within its tissues. This mutualistic relationship allows the coral to receive nutrients from the algae's photosynthesis, while the algae benefit from a protected environment and the coral's waste products.

Habitat

Echinopora horrida is found in the Indo-Pacific region, particularly in reef slopes and lagoons. It prefers depths where it can receive ample light for photosynthesis, typically between 5 to 20 meters. In the wild, it is often subjected to strong currents, which it has adapted to withstand.