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Overview

Comprehensive Description

Biology

Inhabits rocky and coral reefs (Ref. 9710). Oviparous (Ref. 240), monogamous (Ref. 52884).
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Distribution

Range Description

This species is widely distributed in the northwestern Pacific Ocean where it may be found from central and southern Japan to the Northwestern Hawaiian Islands (USA). In Japan it has been recorded along the southern coast extending from Tosa Bay (Shikoku) to Tokyo (Honshu), being particularly common at Izu Peninsula, and is found as far south as the Izu Islands and the Ogasawara (= Bonin) Islands. Within the Northwestern Hawaiian Islands it is known from Midway Atoll and Kure Atoll to as far south as Pearl and Hermes Atoll (G.R. Allen pers. comm. 2006). Although Shen (1993) reports in from Taiwan, this requires confirmation. It can be found at depths of 15 to 60 m (Allen 1980, G.R. Allen pers. comm. 2006).
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Pacific Ocean: southern and central Japan (Ref. 4858) and the northwestern Hawaiian Islands (Midway and Kure).
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Western and Central North Pacific: Southern Japan, Ogasawara Islands, Hawaiian Islands.
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Physical Description

Morphology

Dorsal spines (total): 14; Dorsal soft rays (total): 16; Analspines: 3; Analsoft rays: 17
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Size

Maximum size: 150 mm ---
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Max. size

15.0 cm TL (male/unsexed; (Ref. 4858))
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Ecology

Habitat

Habitat and Ecology

Habitat and Ecology
This species is generally associated with rocky shores and areas of moderate coral growth at the foreslope (G.R. Allen pers. comm. 2006).

Systems
  • Marine
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Environment

reef-associated; non-migratory; marine; depth range 12 - 60 m (Ref. 9710)
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Depth range based on 1 specimen in 1 taxon.
Water temperature and chemistry ranges based on 1 sample.

Environmental ranges
  Depth range (m): 18 - 18
  Temperature range (°C): 23.718 - 23.718
  Nitrate (umol/L): 0.297 - 0.297
  Salinity (PPS): 34.779 - 34.779
  Oxygen (ml/l): 4.970 - 4.970
  Phosphate (umol/l): 0.054 - 0.054
  Silicate (umol/l): 2.240 - 2.240
 
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Depth: 12 - 60m.
From 12 to 60 meters.

Habitat: reef-associated.
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Trophic Strategy

Inhabits rocky and coral reefs (Ref. 9710).
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Life History and Behavior

Life Cycle

Length at sex-change = 12.7 cm TL (Ref. 55367). Sex reversal is completed in 20-39 days (Ref. 34252). Monandric species (Ref. 55367). Distinct pairing (Ref. 240).
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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., Myers, R. & Craig, M.T.

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

Contributor/s

Justification

Listed as Least Concern, as despite its relatively limited distribution, this species occurs in large and stable populations, there is very limited collection of specimens for the aquarium fish trade, no substantial habitat loss, and there are no apparent threats.

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Population

Population

It is generally common with stable populations.


Population Trend
Stable
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Threats

Major Threats

There is no substantial habitat loss, there is limited collection for the marine aquarium fish trade, and there appear to be no major threats to this species overall.

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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. Populations in the Northwestern Hawaiian Islands are within the Papahānaumokuākea Marine National Monument.

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Relevance to Humans and Ecosystems

Benefits

Importance

aquarium: commercial
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Wikipedia

Japanese angelfish

The Japanese angelfish or Japanese pygmy angelfish (Centropyge interruptus) is a very rare marine angelfish. It has an orangey yellow body with purplish blue spots completed with a bright yellow tail. The spots are larger towards the tail, and the bottom part the rear of the fish gradually becomes purple. The spots also turn from blue to purple towards the tail. They are native to the Ogasawara Islands south of Japan.

Little is known about this rare species. It does, however, have a certain reputation among saltwater aquarium keepers. The angelfish is notoriously hard to come by, and at the same time considered one of the most beautiful and durable of Centropyge angelfish. It adapts well to captivity, but because of its rarity, the few specimens that show up in captivity fetch prices in the thousands of dollars.

References

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