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Irrawaddy Dolphin
Orcaella brevirostris
Abstract
Irrawaddy Dolphin Orcaella brevirostris has most recently been assessed for The IUCN Red List of Threatened Species in 2017. Orcaella brevirostris is listed as Endangered under criteria A2cd+3cd+4cd.
The Red List Assessment
Minton, G., Smith, B.D., Braulik, G.T., Kreb, D., Sutaria, D. & Reeves, R. 2017. Orcaella brevirostris (errata version published in 2018). The IUCN Red List of Threatened Species 2017: e.T15419A123790805. https://dx.doi.org/10.2305/IUCN.UK.2017-3.RLTS.T15419A50367860.en. Accessed on 03 November 2026.
Language
English
Last assessed
30 August 2017
Scope of assessment
Global
Population trend
Decreasing
Number of mature individuals
Habitat and ecology
Wetlands (inland), Marine Neritic, Marine Coastal/Supratidal
Geographic range
-
Extant (resident)
Assessment Information
Global Assessment
IUCN Red List Category and Criteria - Global Assessment
Endangered A2cd+3cd+4cd
Date assessed
30 August 2017
Year published
2017
Assessment Information in detail
Geographic Range
Native
Extant (resident)
Bangladesh; Brunei Darussalam; Cambodia; India; Indonesia; Lao People's Democratic Republic; Malaysia; Myanmar; Philippines; Singapore; Thailand; Viet Nam
Number of locations
Upper depth limit
0 metres
Lower depth limit
50 metres
Geographic Range in detail
Population
Current population trend
Number of mature individuals
Population severely fragmented
Yes
Continuing decline of mature individuals
Yes
Population in detail
Habitat and Ecology
System
Habitat type
Wetlands (inland), Marine Neritic, Marine Coastal/Supratidal
Generation length (years)
20 years
Congregatory
Movement patterns
Not a Migrant
Continuing decline in area, extent and/or quality of habitat
Yes
Habitat and Ecology in detail
Threats
Agriculture & aquaculture
- Annual & perennial non-timber crops
- Wood & pulp plantations
Energy production & mining
- Mining & quarrying
Transportation & service corridors
- Shipping lanes
Biological resource use
- Fishing & harvesting aquatic resources
Natural system modifications
- Dams & water management/use
Pollution
- Domestic & urban waste water
- 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 research and monitoring
- Action Recovery Plan : Yes
- Systematic monitoring scheme : No
In-place land/water protection
- Conservation sites identified : Yes, over entire range
- Occurs in at least one protected area : Yes
In-place education
- Included in international legislation : Yes
- Subject to any international management / trade controls : Yes
Conservation Actions in detail
Bibliography
Red List Bibliography
Errata
The original version of this assessment was published with an older version of the distribution map. This errata assessment uses the updated distribution map.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
Ex situ data from Species360
Data source
The information below is from Species360's Zoological Information Management System (ZIMS)
Ex situ data from Species360 in detail
Studies and Actions from Conservation Evidence
Data source
The information below is from the Conservation Evidence website.
