Colonies are mostly caespitose bushes. Branches are tapered and up to 25 millimetres thick. Axial corallites are small and tubular. Radial corallites are of mixed sizes, sometimes alternating in vertical rows and are large and conspicuous, increasing in length down the sides of branches.
Colonies are colourful, usually mixtures of cream, blue, purple, brown and yellow, commonly with purple branch ends and cream corallites, a colour shared with A. valida and A. nana.
Shallow reef environments especially upper reef slopes and outer reef flats.
Common in the Pacific, uncommon in the Indian Ocean.