''Ctenactis'' is a

genus Genus (; : genera ) is a taxonomic rank above species and below family (taxonomy), family as used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In bino ...

of solitary disc corals in the

family Family (from ) is a Social group, group of people related either by consanguinity (by recognized birth) or Affinity (law), affinity (by marriage or other relationship). It forms the basis for social order. Ideally, families offer predictabili ...

Fungiidae The Fungiidae () are a family of Cnidaria, commonly known as mushroom corals or plate corals. The family contains thirteen extant genera. They range from solitary corals to colonial species. Some genera such as '' Cycloseris'' and '' Fungia'' a ...

. Members of this genus are found in the

Indo-Pacific The Indo-Pacific is a vast biogeographic region of Earth. In a narrow sense, sometimes known as the Indo-West Pacific or Indo-Pacific Asia, it comprises the tropical waters of the Indian Ocean, the western and central Pacific Ocean, and the ...

region.

Characteristics

Members of this genus are medium to large oval disc corals. They have an axial furrow with usually a single mouth opening, though sometimes there are several mouths. The

septa SEPTA, the Southeastern Pennsylvania Transportation Authority, is a regional public transportation authority that operates bus, rapid transit, commuter rail, light rail, and electric trolleybus services for nearly four million people througho ...

are heavily toothed with sharp triangular teeth. The

costae In vertebrate anatomy, ribs () are the long curved bones which form the rib cage, part of the axial skeleton. In most tetrapods, ribs surround the thoracic cavity, enabling the lungs to expand and thus facilitate breathing by expanding the thor ...

are weakly developed and have long arborescent spines.

Species

The

World Register of Marine Species The World Register of Marine Species (WoRMS) is a taxonomic database that aims to provide an authoritative and comprehensive catalogue and list of names of marine organisms. Content The content of the registry is edited and maintained by scien ...

currently lists the following species: *'' Ctenactis albitentaculata'' Hoeksema, 1989 *'' Ctenactis crassa'' (Dana, 1846) *''

Ctenactis echinata ''Ctenactis echinata'' is a free-living species of solitary disc coral in the family Fungiidae. It is native to the Indo-Pacific region. This is a common species throughout its wide range and the International Union for Conservation of Nature has ...

'' (Pallas, 1766)

References

Fungiidae Scleractinia genera Cnidarians of the Indian Ocean Cnidarians of the Pacific Ocean Marine fauna of Asia Marine fauna of Oceania Marine fauna of Southeast Asia Taxa named by Addison Emery Verrill {{scleractinia-stub