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Acropora inermis

(Brook, 1891)

Colonies are usually open branched, becoming bushy on upper reef slopes and in shallow lagoons. Main branches may have compact branchlets giving colonies a bushy appearance. Corallites are widely spaced and vary greatly in size, the largest being appressed and tubular. The coenosteum is fine, giving branches a smooth appearance.

Colour: Brown, with pale branch tips.

Habitat: Turbid water around fringing reefs.

Abundance: Uncommon.

Similar species: Acropora vaughani

Taxonomic note: Taxonomic note: Acropora inermis was incorrectly synonymised with A. microphthalma by Veron and Wallace (1984). Source reference: Veron (2000). Taxonomic reference: Brook’s original description/ specimens.

Map displaying probable distribution of species. Points indicate recorded sightings from OBIS.
Acropora inermis.  French Polynesia.  Compact colony in a lagoon.  Valerie Taylor.

Acropora inermis.French Polynesia.Compact colony in a lagoon.Valerie Taylor.

Acropora inermis.  Indonesia.  Irregular tangles of branches.  Charlie Veron.

Acropora inermis.Indonesia.Irregular tangles of branches.Charlie Veron.

Acropora inermis.  Indonesia.  Branch detail.  Charlie Veron.

Acropora inermis.Indonesia.Branch detail.Charlie Veron.

Acropora inermis.  Indonesia.  Showing branch tips.

Acropora inermis.Indonesia.Showing branch tips.

Acropora inermis.  Indonesia.  Showing branching pattern.

Acropora inermis.Indonesia.Showing branching pattern.

Acropora inermis.  Indonesia.  Showing branches.

Acropora inermis.Indonesia.Showing branches.

Acropora inermis.  Indonesia.  Showing branch tip.

Acropora inermis.Indonesia.Showing branch tip.