Common name: Spine coral
General information
The Knobby Brain Coral, Hydnophora exesa, is a species of SPS (Small Polyp Stony) coral known for its distinctive, knobby projections and vibrant green coloration. It is a part of the Merulinidae family and is often sought after by reef aquarium enthusiasts for its unique appearance and contribution to the biodiversity of a reef tank.
Details
- Lighting
- 150 to 250 PAR
- Salinity
- S.G. 1.023 to 1.025
- Temperature
- 24 to 27 °C (75 to 81 °F)
- Acidity
- pH 8.1 to 8.4
- Care level
- Moderate to easy Calcification benefits from stable Ca/Alk levels.
- Flow
- Moderate Mimics natural reef zones.
- Aggression
- Semi aggresive May sting nearby corals.
Taxonomy
- KingdomAnimalsAnimalia
- PhylumCnidariansCnidaria
- ClassAnthozoansAnthozoa
- OrderStony CoralsScleractinia
- FamilyMerulinidaeMerulinidae
- GenusHorn CoralHydnophora
- SpeciesSpine coralHydnophora exesa (Pallas, 1766)
- SynonymsHydnophora contignatio (Forsskål, 1775)Hydnophora demidoffi Fischer von Waldheim, 1807Hydnophora demidovii Fischer von Waldheim, 1807Hydnophora ehrenbergi Milne Edwards & Haime, 1849Hydnophora gyrosa Milne Edwards & Haime, 1849Hydnophora lobata (Lamarck, 1816)Hydnophora maldivensis Gardiner, 1904Hydnophora palassii Fischer von Waldheim, 1807Hydnophora polygonata (Lamarck, 1816)Hydnophora tenella Quelch, 1886Hydnophora tenella applanata Umbgrove, 1940Hydnophorella contignatio (Forsskål, 1775)Hydnophorella exesa (Pallas, 1766)Madrepora contignatio Forsskål, 1775Madrepora exesa Pallas, 1766Monticularia exesa (Pallas, 1766)Monticularia folium Lamarck, 1816Monticularia meandrina Lamarck, 1816
Care
Hydnophora exesa requires moderate to high lighting and strong water flow to thrive in captivity. It is important to maintain stable water parameters, particularly calcium and alkalinity levels, to support its skeletal growth. This coral can be aggressive, extending its sweeper tentacles to compete for space, so it should be placed with caution in relation to other corals.
Symbiosis
While Hydnophora exesa does not have any specific symbiotic relationships that are notable in the aquarium trade, it does contribute to the overall reef ecosystem by providing structure and shelter for various small invertebrates and fish.
Habitat
In the wild, Hydnophora exesa is typically found in shallow reef environments, often in areas with strong water movement. It is distributed across the Indo-Pacific region, including the Red Sea, East Africa, and the central Pacific Ocean.