Astraeosmilia is a genus of colonial stony corals in the family Merulinidae, characterized by branching phaceloid skeletons and separate corallites topped with fleshy, trumpet-shaped polyps. The genus was reinstated through molecular and detailed skeletal analyses to accommodate several species formerly classified as Caulastraea, including Astraeosmilia connata, Astraeosmilia curvata, Astraeosmilia tumida, and Astraeosmilia maxima. In reef aquariums, these corals are appreciated for their vivid coloration and prominent polyp expansion, while stable water chemistry, moderate lighting, gentle to moderate water flow, sufficient space from neighboring corals, and the prevention of debris accumulation between their branches are important for maintaining healthy tissue and steady skeletal growth. :contentReference[oaicite:1]{index=1}
