Characters: Colonies are irregular clumps of straight fine tapered branches arising from a solid base. Radial corallites are appressed, with small nariform rounded openings.
Colour: Uniform sky-blue (which may photograph pink), cream or brown.
Similar Species: Acropora nana which has tubular appressed radial corallites with larger, not nariform openings.
Habitat: Upper reef slopes exposed to strong wave action.
Abundance: Usually uncommon.
Taxonomic Note: Wallace (1999) and Wallace, Done and Muir (2012) considered this species to be a junior synonym of Acropora nana. However, characteristic differences in corallite shape between these species allow them to be reliably separated in the field and in collections.