Characters: Polyps are elongate. Septal teeth and costal spines are both strongly developed. Only a single mouth is present.
Colour: Usually brown.
Similar Species: Ctenactis crassa, which has a series of mouths along the axial furrow. Also C. albitentaculata.
Habitat: Reef slopes and lagoons.
Abundance: Common.
Taxonomic References: Veron and Pichon (1980); Hoeksema (1989a); Veron (2000a);
Identification Guides: Veron (1986a); Sheppard and Sheppard (1991); Nishihira and Veron (1995); Turak and DeVantier (2011b);
