Common name: Hump coral

General information

Porites compressa, commonly known as Finger Coral, is a species of stony coral that is prevalent in the reef-keeping hobby due to its hardiness and unique growth form. It is characterized by its finger-like branches and compressed, porous skeleton, which gives it a distinctive appearance among Porites species.

This coral is known for its slow growth rate and can exhibit a range of colors from pale yellow to deep brown, often with hints of green. It is a hermatypic coral, meaning it contributes to reef-building through the deposition of calcium carbonate.

Care

Finger Coral is considered a good choice for beginner to intermediate reef aquarists. It requires moderate lighting and water flow to thrive. While it can adapt to various lighting conditions, it does best under moderate to high-intensity LED or T5 fluorescent lighting.

Regular feeding is not necessary, as Porites compressa hosts zooxanthellae, symbiotic algae that provide the majority of its nutritional needs through photosynthesis. However, occasional feeding with fine particulate foods can promote growth and health.

Symbiosis

Porites compressa forms a symbiotic relationship with zooxanthellae, which live within its tissues. The coral provides the algae with a protected environment and compounds necessary for photosynthesis. In return, the algae produce oxygen and help the coral to remove wastes. This relationship is crucial for the coral's survival, especially in nutrient-poor waters.

Habitat

Porites compressa is found in shallow to mid-depth waters of the Indo-Pacific region, including the Red Sea, East Africa, the Indian Ocean, and the central and western Pacific Ocean. It typically inhabits reef slopes and lagoons where it can form extensive colonies, contributing to the complex structure of coral reefs.