Common name: Hump coral

General information

Porites attenuata, commonly known as Knobby Porites or Branching Porites, is a species of stony coral that is appreciated in the reefkeeping hobby for its hardiness and unique growth form. It exhibits a branching structure with nodules or 'knobs' that give it a distinctive appearance. This coral is part of the massive Porites genus, which is known for its contribution to reef-building through the formation of calcium carbonate skeletons.

Care

Knobby Porites is a resilient coral species that can thrive in a range of lighting conditions, from moderate to high intensity. It is important to provide turbulent water flow to mimic its natural habitat and promote the removal of waste products. This coral can benefit from supplemental feedings of microplankton or other coral foods designed to stimulate polyp extension and growth.

Symbiosis

While Porites attenuata does not have the same level of symbiotic relationships as some other corals, it does host a variety of microscopic algae known as zooxanthellae within its tissues. These algae perform photosynthesis, providing the coral with essential nutrients while benefiting from the coral's waste products in a mutualistic relationship.

Habitat

Porites attenuata is found in the Indo-Pacific region, typically in shallow reef environments. It prefers areas with strong water movement and is often seen at depths where light penetration supports the photosynthetic needs of its symbiotic zooxanthellae. Its robust nature allows it to withstand various environmental conditions, making it a suitable candidate for aquarists looking to add a piece of the reef's diversity to their tanks.