Skip to Content
Sign up
Report an error

Madracis kirbyi

Veron and Pichon, 1976

Colonies are laminar, encrusting, nodular or columnar, columns being club-shaped. Corallites are subcerioid, closely compacted and angular in outline, with solid conical columellae. Usually ten septa are present and these are fused with the columella. The coenosteum is covered by fine spinules. Tentacles are usually extended only at night.

Colour: The oral disc is green or white, the coenosteum mottled brown and reddish-brown.

Habitat: Most reef environments but especially turbid ones.

Abundance: Rare.

Similar species: Madracis decactis

Taxonomic note: Source reference: Veron (2000). Taxonomic reference: Veron and Pichon (1976). Additional identification guides: Veron (1986), Sheppard and Sheppard (1991), Carpenter et al. (1997).

Map displaying probable distribution of species. Points indicate recorded sightings from OBIS.
Madracis kirbyi.  Vietnam.  This species is commonly cryptic and encrusting.  Charlie Veron.

Madracis kirbyi.Vietnam.This species is commonly cryptic and encrusting.Charlie Veron.

Madracis kirbyi.  Great Barrier Reef, Australia.  A columnar growth-form on a turbid inshore reef.  Charlie Veron.

Madracis kirbyi.Great Barrier Reef, Australia.A columnar growth-form on a turbid inshore reef.Charlie Veron.

Madracis kirbyi.  Great Barrier Reef, Australia.  A nodular colony where living corallites are overgrowing a dead skeleton.  Charlie Veron.

Madracis kirbyi.Great Barrier Reef, Australia.A nodular colony where living corallites are overgrowing a dead skeleton.Charlie Veron.

Madracis kirbyi.  Great Barrier Reef, Australia.  Showing colony surface.

Madracis kirbyi.Great Barrier Reef, Australia.Showing colony surface.

Madracis kirbyi.  Vietnam.  Showing corallites.

Madracis kirbyi.Vietnam.Showing corallites.

Madracis kirbyi.  Vietnam.  Showing whole colony.

Madracis kirbyi.Vietnam.Showing whole colony.

Madracis kirbyi.  Great Barrier Reef, Australia.  Showing colony surface.

Madracis kirbyi.Great Barrier Reef, Australia.Showing colony surface.