Characters: Colonies are usually encrusting, becoming submassive. Corallites are angular, with a uniform appearance. Walls are usually thin. Long and short septa strongly alternate. Paliform lobes are well developed, forming a neat crown. Colour: Uniform pale brown or greenish-brown. Wall tops are pale. Similar species: Goniastrea retiformis, which has similar corallite characters but corallites are much larger. May be mistaken for the poritids Porites and Poritipora underwater. Habitat: Shallow reef environments. Abundance: Uncommon.