Taxonomy
Taxonomy in detail
Scientific name
Genicanthus takeuchii
Authority
Pyle, 1997
Synonyms
Common names
Japanese
Mizutama-yakko
Translate page
The Red list Assessment
Pyle, R. & Myers, R. 2010. Genicanthus takeuchii. The IUCN Red List of Threatened Species 2010: e.T165827A6142514. https://dx.doi.org/10.2305/IUCN.UK.2010-4.RLTS.T165827A6142514.en. Accessed on 18 June 2022.
Last assessed
08 October 2009
Scope of assessment
Global
Population trend
Stable
Number of mature individuals
Habitat and ecology
Marine Neritic
Assessment Information
IUCN Red List Category and Criteria
Date assessed
08 October 2009
Year published
2010
Annotations
Needs updating
Assessment Information in detail
Year last seen
Previously published Red List assessments
Regional assessments
Assessor(s)
Pyle, R. & Myers, R.
Reviewer(s)
Elfes, C., Polidoro, B., Livingstone, S. & Carpenter, K.E.
Contributor(s)
Facilitator(s) / Compiler(s)
Partner(s) / Institution(s)
Authority / Authorities
Justification
Listed as Least Concern, as despite its relatively limited distribution, there are no apparent threats and populations are considered to be stable.
Geographic Range
Native
Extant (resident)
Japan (Marcus I., Ogasawara-shoto)
Number of locations
Upper depth limit
25 metres
Lower depth limit
60 metres
Geographic Range in detail
FAO Fishing Areas
| Origin | Locations |
|---|---|
| Native | Pacific - northwest |
Estimated area of occupancy (AOO) (km²)
Continuing decline in area of occupancy (AOO)
Extreme fluctuations in area of occupancy (AOO)
Estimated extent of occurrence (EOO) (km²)
Continuing decline in extent of occurrence (EOO)
Extreme fluctuations in extent of occurrence (EOO)
Continuing decline in number of locations
Extreme fluctuations in the number of locations
Range Description
This species is known only from the Ogasawara (= Bonin) Islands and the relatively isolated Minami-Tori-Shima (= Marcus) Island (both of Japan) (Randall et al. 1997). It is usually found at depths between 25 and 60 m (R. Pyle pers. comm. 2009).
Population
Current population trend
Number of mature individuals
Population severely fragmented
No
Continuing decline of mature individuals
Population in detail
Extreme fluctuations
No. of subpopulations
Continuing decline in subpopulations
Extreme fluctuations in subpopulations
All individuals in one subpopulation
No. of individuals in largest subpopulation
Description
It is generally common with stable populations.
Habitat and Ecology
System
Habitat type
Generation length (years)
Congregatory
Movement patterns
Continuing decline in area, extent and/or quality of habitat
Habitat and Ecology in detail
Habitat and Ecology
This little-known deep dwelling species is generally associated with the outer slopes of coral reefs (G.R. Allen pers. comm. 2006).
Classification scheme
| Habitats | Suitability | Major importance | ||
|---|---|---|---|---|
| 9. Marine Neritic | 9.2. Marine Neritic - Subtidal Rock and Rocky Reefs | Suitable | Yes | |
| 9.8. Marine Neritic - Coral Reef | 9.8.1. Outer Reef Channel | Suitable | Yes | |
| 9.8.3. Foreslope (Outer Reef Slope) | Suitable | Yes | ||
Threats
Threats in detail
Threats
There appear to be no major threats to this species. It has not been collected for the marine fish aquarium trade.
Classification scheme
| Threats | Timing | Stresses | Scope | Severity | Impact score | Invasive species | Virus | ||
|---|---|---|---|---|---|---|---|---|---|
Use and Trade
Pets/display animals, horticulture
Local: ✘
National: ✔
International: ✔
Use and Trade in detail
Use and Trade
This species has not been kept by aquarists, but is of potential interest to aquarium trade (G.R. Allen pers. comm. 2006, Endoh 2007).
Conservation Actions
In-place land/water protection
- Occurs in at least one protected area : Yes
Conservation Actions in detail
Conservation Actions
There appear to be no species-specific conservation measures in place. This species is believed to be present within marine protected areas (the Ogasawara Islands are possibly protected).
Conservation actions classification scheme
| Conservation Actions Needed | Notes | ||
|---|---|---|---|
Research classification scheme
| Research Needed | Notes | ||
|---|---|---|---|
Bibliography
Red List Bibliography
Allen, G.R., Steene, R. and Allen, M. 1998. A guide to angelfishes and butterflyfishes. Odyssey Publishing/Tropical Reef Research.
Endoh, K. 2007. Angelfishes of the World. Two Little Fishies, Inc., Miami Gardens, Florida.
IUCN. 2010. IUCN Red List of Threatened Species (ver. 2010.4). Available at: http://www.iucnredlist.org. (Accessed: 27 October 2010).
Nakabo, T. 2002. Fishes of Japan with pictorial keys to the species, English edition II. Tokai University Press, Tokyo.
Randall, J.E., Ida, H., Kato, K., Pyle, R.L. and Earle, J.L. 1997. Annotated checklist of inshore fishes of the Ogasawara Islands. National Science Museum Monographs, Tokyo, Japan.
External Data
Images and External Links
Images and External Links in detail
iNaturalist.org observations
Search sites for species
CITES Legislation from Species+
Data Source
The information below is from the Species+ website.
CITES Legislation from Species+ in detail
Studies and Actions from Conservation Evidence
Data Source
The information below is from the Conservation Evidence website.
Studies and Actions from Conservation Evidence in detail
