Overview

Comprehensive Description

Biology

Only known from a few specimens collected at depths over 30 m along the current-swept drop-offs of Orote Peninsula, Guam. Occur singly or in pairs among black corals. Oviparous (Ref. 205). Form pairs during breeding (Ref. 205). Do well in captivity.
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Distribution

Range Description

This species is endemic to the western Pacific where it has only been recorded from Guam (USA) and the Northern Marianas Islands. It is possibly present at the Gilbert Islands (Kiribati) however this requires confirmation (R. Pyle pers. comm. 2009). It is found at depths from 35-80 m.
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Western Pacific: endemic to Guam.
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Western Pacific: Marana Islands.
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Physical Description

Morphology

Dorsal spines (total): 13; Dorsal soft rays (total): 20; Analspines: 3; Analsoft rays: 16
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Size

Maximum size: 120 mm NG
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Max. size

12.0 cm TL (male/unsexed; (Ref. 9710))
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Ecology

Habitat

Habitat and Ecology

Habitat and Ecology
It has been recorded on coral reefs and rocky reefs from steep drop-offs and vertical walls where currents are strong, with abundant growth of gorgonians and black coral.

Systems
  • Marine
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Environment

reef-associated; marine; depth range 36 - 75 m (Ref. 9710)
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Depth: 36 - 75m.
From 36 to 75 meters.

Habitat: reef-associated. Only known from a few specimens collected at depths over 30 m along the current-swept dropoffs of Orote Peninsula, Guam. Occurs singly or in pairs among black corals. Does well in captivity.
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Life History and Behavior

Life Cycle

Form pairs during breeding (Ref. 205).
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Conservation

Conservation Status

IUCN Red List Assessment


Red List Category
LC
Least Concern

Red List Criteria

Version
3.1

Year Assessed
2010

Assessor/s
Pyle, R., Allen, G. & Myers, R.

Reviewer/s
Elfes, C., Polidoro, B., Livingstone, S. & Carpenter, K.E.

Contributor/s

Justification

Although it has a relatively restricted range, there are no major threats and the population is unlikely to be declining. Listed as Least Concern.


History
  • 1996
    Vulnerable
    (Baillie and Groombridge 1996)
  • 1996
    Vulnerable
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Population

Population
This species is not often sighted (largely because of its distribution in deeper waters) and is known only on the basis of a few museum specimens and underwater photographs. It is relatively uncommon to occasional with stable populations.

Population Trend
Stable
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Threats

Major Threats
There appear to be no major threats to this species (G.R. Allen pers. comm. 2006). Any collecting for the pet trade would likely be very limited.
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Least Concern (LC)
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Management

Conservation Actions

Conservation Actions
There appear to be no species specific conservation measures in place. There are protected areas within the range of this species (e.g. in the Marianas Islands) but the presence of populations within these needs to be confirmed. Further general information is needed on the taxonomic status of several populations and ecology of this species.
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Relevance to Humans and Ecosystems

Benefits

Importance

aquarium: commercial
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Wikipedia

Yellow-crowned butterflyfish

The Yellow-crowned butterflyfish (Chaetodon flavocoronatus) is a species of butterflyfish endemic to Guam and the Northern Mariana Islands.

Source

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