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Acropora nana

(Studer, 1878)

Colonies are compact clumps of long, non-tapering, straight, equidistant branchlets radiating from a solid base. Axial corallites are tubular with rounded margins. Radial corallites are long, tubular and appressed. The whole colony is delicate and branchlets readily break apart.

Colour: Cream, blue or purple, usually with purple branch tips.

Habitat: Outer reef flats where currents or wave action is strong.

Abundance: Sometimes common.

Similar species:

Taxonomic note: Source reference: Veron (2000). Taxonomic references: Veron and Wallace (1984), Wallace (1999). Additional identification guides: Veron (1986), Nishihira and Veron (1995).

Map displaying probable distribution of species. Points indicate recorded sightings from OBIS.
Acropora nana.  Scott Reef, western Australia.  Usually found in intertidal habitats exposed to strong wave action.  Charlie Veron.

Acropora nana.Scott Reef, western Australia.Usually found in intertidal habitats exposed to strong wave action.Charlie Veron.

Acropora nana.  Ryukyu Islands, Japan.  Neat evenly spaced branchlets with elongate radial corallites.  Charlie Veron.

Acropora nana.Ryukyu Islands, Japan.Neat evenly spaced branchlets with elongate radial corallites.Charlie Veron.

Acropora nana.  Ryukyu Islands, Japan.  Branches are easily broken, yet they can withstand strong wave action.  Charlie Veron.

Acropora nana.Ryukyu Islands, Japan.Branches are easily broken, yet they can withstand strong wave action.Charlie Veron.

Acropora nana.  Great Barrier Reef, Australia.  Showing branch tip.

Acropora nana.Great Barrier Reef, Australia.Showing branch tip.

Acropora nana.  Great Barrier Reef, Australia.  Showing branching pattern.

Acropora nana.Great Barrier Reef, Australia.Showing branching pattern.

Acropora nana.  Great Barrier Reef, Australia.  Showing branch tips.

Acropora nana.Great Barrier Reef, Australia.Showing branch tips.

Acropora nana.  Great Barrier Reef, Australia.  Showing branching pattern.

Acropora nana.Great Barrier Reef, Australia.Showing branching pattern.

Acropora nana.  Great Barrier Reef, Australia.  Showing characteristic branching pattern.

Acropora nana.Great Barrier Reef, Australia.Showing characteristic branching pattern.

Acropora nana.  Great Barrier Reef, Australia.  Showing clump formation.

Acropora nana.Great Barrier Reef, Australia.Showing clump formation.