Overview

Comprehensive Description

Biology

The species is common on coral reefs, about 2-10 m and is generally commensal with large sea anemones, either Entacmaea quadricolor (Rüppell & Leuckart, 1828) orHeteractis crispa (Ehrenberg, 1834). It is usually seen in groups that swim a short distance above their host anemones, apparently feeding on zooplankton. Reported to have been frequently encountered on local reefs in about 6-8 m depth, usually in association with Entacmaea quadricolor (Paul Brown, National Park of American Samoa, pers.comm.) (Ref. 78105). Oviparous, distinct pairing during breeding (Ref. 205). Eggs are demersal and adhere to the substrate (Ref. 205). Males guard and aerate the eggs (Ref. 205).
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Distribution

Western Pacific: Fiji, Tonga and Samoa.
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Central Pacific: Fiji, Tonga and American Samoa.
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Physical Description

Morphology

Dorsal spines (total): 10; Dorsal soft rays (total): 16 - 18; Analspines: 2; Analsoft rays: 14
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Size

Max. size

8.6 cm SL (male/unsexed; (Ref. 78105))
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Diagnostic Description

This pomacentrid species is distinguished by the following characters: D X, 16-18 (usually X, 17); A II, 14; pectoral rays 18 (rarely 17); tubed lateral-line scales 36-43; gill rakers 5 + 12-14 (total 17-19); opercular spinules 11-19; body depth 1.7-1.9 in SL; body color generally red-orange including fins, grading to brownish on upper back of adults and a single white bar immediately posterior to the eye, its greatest width equal to that of eye or greater, narrowing to one-third to one-half of greatest width at dorsal midline (Ref. 78105).
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Ecology

Habitat

Environment

reef-associated; marine; depth range 2 - 10 m (Ref. 78105)
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Life History and Behavior

Life Cycle

Oviparous, distinct pairing during breeding (Ref. 205). Eggs are demersal and adhere to the substrate (Ref. 205). Males guard and aerate the eggs (Ref. 205).
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Molecular Biology and Genetics

Molecular Biology

There are small but significant genetic differences among the populations in Tonga and Fiji

  • Drew and Barber "Genetic connectivity within the Lau Basin" unpublished report to Conservation International
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Conservation

Threats

Not Evaluated
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