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Acropora tenuis

(Dana, 1846)

Colonies are corymbose clumps, usually with neat evenly spaced delicate branchlets, but branchlets may be irregular and prostrate. Axial corallites are long and tubular. Radial corallites are arranged in a neat rosette and have slightly flaring lips.

Colour: Yellow, cream, green or blue. Colours may be bright with distinctively coloured corallite lips.

Habitat: Upper reef slopes.

Abundance: Common in the western Pacific and Red Sea, uncommon elsewhere.

Similar species: Acropora vermiculata

Taxonomic note: Taxonomic note: Colonies from the western Indian Ocean and Red Sea have relatively thin and rounded corallite walls. They have traditionally been called Acropora eurystoma (Klunzinger, 1879). 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 tenuis.  Great Barrier Reef, Australia.  Small corymbose colony.  Charlie Veron.

Acropora tenuis. Great Barrier Reef, Australia. Small corymbose colony. Charlie Veron.

Acropora tenuis.  Great Barrier Reef, Australia.  Habitat exposed to strong wave action.  Charlie Veron.

Acropora tenuis. Great Barrier Reef, Australia. Habitat exposed to strong wave action. Charlie Veron.

Acropora tenuis.  Papua New Guinea.  Variation in structure and colour of branches.  Charlie Veron.

Acropora tenuis. Papua New Guinea. Variation in structure and colour of branches. Charlie Veron.

Acropora tenuis.  Papua New Guinea.  Variation in structure and colour of branches.  Charlie Veron.

Acropora tenuis. Papua New Guinea. Variation in structure and colour of branches. Charlie Veron.

Acropora tenuis.  Papua New Guinea.  Variation in structure and colour of branches.  Charlie Veron.

Acropora tenuis. Papua New Guinea. Variation in structure and colour of branches. Charlie Veron.

Acropora tenuis.  Great Barrier Reef, Australia.  Corallite detail.  Ed Lovell.

Acropora tenuis. Great Barrier Reef, Australia. Corallite detail. Ed Lovell.

Acropora tenuis.  Madagascar.  Variation in structure and colour of branches.  Charlie Veron.

Acropora tenuis. Madagascar. Variation in structure and colour of branches. Charlie Veron.

Acropora tenuis.  Red Sea.  Variation in structure and colour of branches.  Charlie Veron.

Acropora tenuis. Red Sea. Variation in structure and colour of branches. Charlie Veron.

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

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

Acropora tenuis.  Southern Red Sea.  Showing radial corallites.

Acropora tenuis. Southern Red Sea. Showing radial corallites.

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

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

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

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

Acropora tenuis.  Great Barrier Reef, Australia.  Showing skeletal detail.

Acropora tenuis. Great Barrier Reef, Australia. Showing skeletal detail.

Acropora tenuis.  Great Barrier Reef, Australia.  Showing plate formation.

Acropora tenuis. Great Barrier Reef, Australia. Showing plate formation.

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

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