Millepora Acropora Care Guide
Acropora millepora · Saltwater SPS Coral

What Millepora Acropora look like
Acropora millepora, commonly known as the staghorn coral, exhibits a distinctive branching morphology characterized by its thin, elongated branches that can reach up to 1 meter in height. The coral's structure is composed of a robust calcium carbonate skeleton, which provides both support and protection. The polyps are small and typically extend during the night, displaying a vibrant array of colors ranging from green to blue, and occasionally pink or purple, depending on the environmental conditions and symbiotic zooxanthellae present. Sexual dimorphism is not pronounced in this species, as both sexes exhibit similar external features. Defensive adaptations include the presence of nematocysts within the polyps, which can deliver a mild sting to deter potential predators. Unique morphological features include the presence of a well-defined axial corallite and a complex system of coenosarc that connects the branches, allowing for efficient nutrient sharing among polyps.
Behavior & temperament
Acropora millepora is known for its rapid growth and competitive nature, often forming dense colonies that can dominate reef environments. It typically occupies the upper reef slopes and is highly phototropic, extending its polyps to maximize light capture. In terms of breeding behavior, this species is a broadcast spawner, releasing gametes into the water column during specific lunar phases, which enhances fertilization success. The coral exhibits a symbiotic relationship with zooxanthellae, which provides essential nutrients through photosynthesis. While generally not aggressive towards other corals, it can engage in competition for space and light, utilizing its rapid growth and shading tactics to outcompete neighboring species.
Diet & feeding
Acropora millepora is primarily a photosynthetic coral, relying on symbiotic zooxanthellae for energy, but it also captures plankton and organic particles from the water column. In captivity, it requires strong lighting and may benefit from supplemental feeding with phytoplankton or coral-specific foods to enhance growth and coloration.
Behind the name
The scientific name 'Acropora' derives from the Greek words 'akron' meaning 'top' or 'summit' and 'pora' meaning 'to bear', referring to the coral's branching structure that resembles a tree or bush. The species name 'millepora' comes from Latin, meaning 'thousand pores', indicative of the numerous small pores present in its skeleton.
Plan your tank
Check the numbers before you buy: tank volume, salinity, salt mix, water changes, and your ongoing care routine.
Keeping Millepora Acropora?
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