Padogobius nigricans


Taxonomy [top]

Kingdom Phylum Class Order Family

Scientific Name: Padogobius nigricans
Species Authority: (Canestrini, 1867)
Common Name(s):
English Arno Goby

Assessment Information [top]

Red List Category & Criteria: Vulnerable B2ab(ii,iii,iv,v) ver 3.1
Year Published: 2006
Date Assessed: 2006-01-31
Assessor(s): Crivelli, A.J.
Reviewer(s): Bianco, G. & Freyhof, J. (Mediterranean Workshop, Dec. 2004)
This species is relatively restricted range (etimated area of occupancy (AOO) < 2,000 km²) and is only known from six river basins and two lakes, which are treated as separate locations on the basis of the likely threats. Formerly the species was extremely common but it has now disappeared from two rivers and has become rare in many others mostly as result of interaction with the introduced, congeneric species, Padogobius bonelli. Other causes of decline are water extraction and rising water temperatures due to lower water levels, pollution and predation by alien species.
1996 Vulnerable (Baillie and Groombridge 1996)
1996 Vulnerable
1994 Vulnerable (Groombridge 1994)
1990 Vulnerable (IUCN 1990)

Geographic Range [top]

Range Description: Restricted to the Tyrrhenian catchment of Central Italy.
Range Map: Click here to open the map viewer and explore range.

Population [top]

Population: The species is threatened mainly by introduction of the congeneric alien P. bonelli, which caused local extinctions in at least the river basins of Ombrone, Amaseno and Mignone in central Italy.
Population Trend: Decreasing

Habitat and Ecology [top]

Habitat and Ecology: Lives in small rivers with fast running water and stony substrate. It reproduces from late April to July according to the water temperature in different rivers. Also found in lakes.
Systems: Freshwater

Threats [top]

Major Threat(s): Habitat destruction, water extraction, and invasive species (Padogobius bonelli, in particular).

Conservation Actions [top]

Conservation Actions: It is listed in Annex II of the European Union Habitat Directive and in Appendix III of the Bern Convention.

Citation: Crivelli, A.J. 2006. Padogobius nigricans. The IUCN Red List of Threatened Species. Version 2014.3. <>. Downloaded on 28 March 2015.
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