Astreopora
Genus
A massive SPS in the Acropora family. Named for star-shaped scattered corallites; a hardy entry-level SPS.

Names & Synonyms
- CommonAstreopora
- Commonアストレオポラ
- CommonStar Coral
- Commonスターコーラル
Overview
Astreopora is an SPS in the Acropora family that grows massive to hemispherical, with star-shaped corallites scattered over its surface. Less delicate than Acropora, it is hardy and an approachable entry-level SPS. Keep it under moderate-to-strong light and moderate flow; it often shows subdued green and brown coloration. Its slow growth and low aggression are advantages.
Related corals of the same type
Blue Coralアオサンゴ(ヘリオポラ)spsIntermediateThe only octocoral with a solid blue skeleton. Taxonomically unique and hardy, but CITES Appendix II — handle with care.
AnacroporaアナクロポラSPSIntermediateA branching SPS related to Acropora but lacking axial corallites, forming slender delicate branches with pastel coloration.
IsoporaイソポラSPSIntermediateA branching-to-encrusting SPS formerly placed in Acropora. Bearing multiple axial corallites, it is hardier and easier than Acropora.
CoscinaraeaコスキナラエアSPSBeginnerA hardy coral related to Psammocora with a rough texture. Encrusting, with wide tolerance of light and flow.
Hydnophora (Horn Coral)コモンサンゴspsIntermediateCoral with dense small bumps (hydnophores) on surface. Between LPS and SPS in care. Fast-growing with beautiful fluorescent green. Aggressive — careful placement needed.
Psammocoraサンドペーパーコーラル(プサモコラ)SPSBeginnerA hardy small-polyp coral with a sandpaper-like texture. Encrusting to submassive; an approachable beginner SPS.Related care articles

SPS Coral Infections and Disease Prevention | Distinguishing White Spot Disease, Planula Settlement Disease, and Mixed Infections
When SPS corals contract infections, multiple warning signals appear. The initial sign is fading color and loss of translucency, where healthy specimens lose their transparency and vibrant coloration. White Spot Disease produces numerous microscopic white lesions on the coral's surface, and as the condition progresses, it spreads across the entire body. This is a typical symptom of parasitic or bacterial infection. Another form of infection, Planula Settlement Disease, occurs immediately after larval settlement and causes newly settled small colonies to necrose rapidly.

SPS Corals Other than Acropora | Cultivation Characteristics of Pocillopora, Seriatopora, and Stylophora
While SPS corals are often exemplified by Acropora (staghorn coral), there are many other species with different growth patterns such as branching and massive forms, including Pocillopora and Seriatopora. This article introduces the characteristics and cultivation considerations for each.

Montipora Morphological Classification and Rearing Environment | Understanding the Differences from Acropora
As a representative SPS species, Montipora exhibits diverse growth forms that differ from Acropora, another SPS type. This article explains the characteristics of each form—digitate, plate, and encrusting—and how to optimize light, water flow, and nutrient environments for each.
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