Achondrostoma occidentale


Taxonomy [top]

Kingdom Phylum Class Order Family

Scientific Name: Achondrostoma occidentale
Species Authority: (Robalo, Almada, Sousa Santos, Moreira & Doadrio, 2005)

Assessment Information [top]

Red List Category & Criteria: Endangered B1ab(iii)+2ab(iii) ver 3.1
Year Published: 2008
Date Assessed: 2008-01-01
Assessor(s): Freyhof, J. & Kottelat, M.
Reviewer(s): Bogutskaya, N., & Smith, K. (IUCN Freshwater Biodiversity Unit)
This species has a very restricted range (area of occupancy <500 km², extent of occurrence <5,000 km²), and found in only three streams (possibly two as the species is believed to be extirpated in Safarujo after it dried up) in Estremadura in Portugal where it is heavily impacted by domestic and agricultural pollution and water abstraction, especially during the summer dry period where the streams dry up.

Geographic Range [top]

Range Description:Portugal: Estremadura, in Alcabrichel, Sizandro and Safarujo drainages. It is believed the population in the Safarujo is extirpated after the stream dried up.
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population: No information.
Population Trend: Unknown

Habitat and Ecology [top]

Habitat and Ecology: Habitat:
Lower stretches of rivers.

No data. Spawns in April-May.
Systems: Freshwater

Threats [top]

Major Threat(s): The species is heavily impacted by pollution from domestic and agricultural sewage and water abstraction.

Conservation Actions [top]

Conservation Actions: No information.

Bibliography [top]

IUCN. 2008. 2008 IUCN Red List of Threatened Species. Available at: (Accessed: 5 October 2008).

Kottelat, M. and Freyhof, J. 2007. Handbook of European Freshwater Fishes. Publications Kottelat, Cornol, Switzerland.

Robalo, J.I., Almada, V.C., Sousa-Santos, C., Moreira, M.I. and Doadrio, I. 2005. A new species of the genus Chondrostoma Agassiz, 1832 (Actynopterigii, Cyprinidae) from western Portugal.

Citation: Freyhof, J. & Kottelat, M. 2008. Achondrostoma occidentale. In: The IUCN Red List of Threatened Species. Version 2014.3. <>. Downloaded on 28 March 2015.
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