Taxonomy
Taxonomy in detail
Tokyo Bitterling
Tanakia tanago
Citation
Hasegawa, K., Kanao, S., Miyazaki, Y., Mukai, T., Nakajima, J., Takaku, K. & Taniguchi, Y. 2019. Tanakia tanago. The IUCN Red List of Threatened Species 2019: e.T21383A110464790. https://dx.doi.org/10.2305/IUCN.UK.2019-2.RLTS.T21383A110464790.en. Downloaded on 27 July 2021.
Last assessed
07 December 2017
Scope of assessment
Global
Population trend
Decreasing
Number of mature individuals
2,533
Habitat and ecology
Wetlands (inland), Artificial/Aquatic & Marine
Threats
Agriculture & aquaculture
- Annual & perennial non-timber crops
Biological resource use
- Fishing & harvesting aquatic resources
Natural system modifications
- Dams & water management/use
Invasive and other problematic species, genes & diseases
- Invasive non-native/alien species/diseases
Pollution
- Agricultural & forestry effluents
Conservation actions in place
In-place land/water protection
- Invasive species control or prevention : Yes
In-place species management
- Subject to ex-situ conservation : Yes
Conservation actions needed
- Site/area protection
- Resource & habitat protection
- Site/area management
- Invasive/problematic species control
- Habitat & natural process restoration
- Species recovery
- Species re-introduction
- Awareness & communications
- Legislation
Research needed
- Population size, distribution & trends
- Life history & ecology
- Threats
- Actions
- Species Action/Recovery Plan
- Area-based Management Plan
- Population trends
Assessment Information
Assessment language
English
Date assessed
07 December 2017
Year published
2019
Assessment Information in detail
Geographic Range
Native
Extant (resident)
Japan (Honshu)
Number of locations
12
Upper depth limit
Lower depth limit
Geographic Range in detail
Population
Current population trend
Number of mature individuals
2,533
Population severely fragmented
Yes
Continuing decline of mature individuals
Yes
Population in detail
Habitat and Ecology
Habitat type
Generation length (years)
Congregatory
Movement patterns
Continuing decline in area, extent and/or quality of habitat
Yes
Habitat and Ecology in detail
Threats
Agriculture & aquaculture
- Annual & perennial non-timber crops
Biological resource use
- Fishing & harvesting aquatic resources
Natural system modifications
- Dams & water management/use
Invasive and other problematic species, genes & diseases
- Invasive non-native/alien species/diseases
Pollution
- Agricultural & forestry effluents
Threats in detail
Use and Trade
Pets/display animals, horticulture
Local: ✘
National: ✔
International: ✘
Use and Trade in detail
Conservation Actions
In-place land/water protection
- Invasive species control or prevention : Yes
In-place species management
- Subject to ex-situ conservation : Yes
Conservation Actions in detail
Bibliography
Bibliography in detail
Text summary
Text summary in detail
External Data
Images and External Links
Images and External Links in detail
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