Common name: False knob coral

General information

Montastraea curta, commonly known as Blunt Horn Coral, is a species of stony coral that is popular among reef aquarium enthusiasts for its hardiness and unique appearance. This coral is characterized by its rounded, dome-shaped colonies and blunt, horn-like corallites that protrude from the surface. The coloration of M. curta can vary widely, ranging from shades of brown to green, with some specimens exhibiting beautiful fluorescent highlights under actinic lighting.

Care

Blunt Horn Coral is considered a hardy species that can thrive in a range of aquarium conditions. It prefers moderate to high lighting and moderate water flow. While it can adapt to various light intensities, providing a stable environment with consistent water parameters is crucial for its health and growth. M. curta benefits from the addition of calcium, alkalinity, and magnesium supplements to maintain the skeletal structure.

Symbiosis

Like many stony corals, Montastraea curta hosts symbiotic zooxanthellae within its tissues. These photosynthetic algae provide the coral with essential nutrients through photosynthesis, which in turn helps the coral to build its calcium carbonate skeleton. This symbiotic relationship is vital for the survival of the coral and contributes to the overall productivity of coral reef ecosystems.

Habitat

Montastraea curta is found in the Indo-Pacific region, typically in shallow reef environments. It is often seen on reef slopes and in lagoons, where it contributes to the complex structure of the reef and provides habitat for a variety of marine life. In the wild, it can be found at depths ranging from 3 to 30 meters, but in the aquarium, it is best placed in areas where it can receive ample lighting and water flow.