Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Chordata Actinopterygii Cypriniformes Cyprinidae

Scientific Name: Parachondrostoma arrigonis
Species Authority: (Steindachner, 1866)
Chondrostoma arrigonis (Steindachner, 1866)

Assessment Information [top]

Red List Category & Criteria: Critically Endangered A2ace; B2ab(i,ii,iii,iv,v) ver 3.1
Year Published: 2006
Date Assessed: 2006-01-31
Assessor(s): Crivelli, A.J.
Reviewer(s): Carmona, J. & Darwall, W. (Mediterranean Workshop, Dec. 2004)
Doadrio undertook a 3-month study of all the Jucar river basin and found only 10 individuals of C. arrigonis at one location (Doadrio, I. pers comm). A canal constructed between the Jucar basin and the Trasinase Tajo-Seguna has allowed C. polylepis to enter and out compete C. arrigonis. Based upon this study and previous information it has been observed that that the population has declined by more than 80% in the past 10 years. The area of occupancy (AOO) of the remaining location is estimated at <10 km², qualifying the species for the Critically Endangered category, and the Jucar river basin is considered to be one location due to the nature of the main threat: introduced species.

Geographic Range [top]

Range Description: It is restricted to the Jucar river basin in eastern Spain.
Countries occurrence:
Range Map: Click here to open the map viewer and explore range.

Population [top]

Population: A recent 3-month study found only 10 individuals at one location in the Jucar river basin (Doadrio, I. pers. comm).
Current Population Trend: Decreasing
Additional data:

Habitat and Ecology [top]

Habitat and Ecology: It lives in all river sections, but mainly in the middle reaches.
Systems: Freshwater

Threats [top]

Major Threat(s): Water pollution and extraction, introduction of fish exotic predators. And Chondrostoma polylepis, a competitor, has been introduced.

Conservation Actions [top]

Conservation Actions: None.

Citation: Crivelli, A.J. 2006. Parachondrostoma arrigonis. The IUCN Red List of Threatened Species 2006: e.T61363A12468110. . Downloaded on 07 October 2015.
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