Taricha rivularis


Taxonomy [top]

Kingdom Phylum Class Order Family

Scientific Name: Taricha rivularis
Species Authority: (Twitty, 1935)
Common Name/s:
English Redbelly Newt

Assessment Information [top]

Red List Category & Criteria: Least Concern ver 3.1
Year Published: 2004
Date Assessed: 2004-04-30
Assessor/s: Geoffrey Hammerson
Reviewer/s: Global Amphibian Assessment Coordinating Team (Simon Stuart, Janice Chanson, Neil Cox and Bruce Young)
Listed as Least Concern since, although its Extent of Occurrence is less than 20,000 km2, it occurs in an area of extensive, suitable habitat which appears not to be under significant threat, it has a presumed large population, and it is unlikely to be declining fast enough to qualify for listing in a more threatened category.

Geographic Range [top]

Range Description: This species can be found from the Coast from Honeydew, Humboldt County, south to the Russian River area, Sonoma County, California, United States (Stebbins 1985).
United States
Range Map: Click here to open the map viewer and explore range.

Population [top]

Population: It is common in many streams (Petranka 1998). Total adult population size is unknown but surely exceeds 100,000; Twitty (1966) marked 20,000+ in one study area.
Population Trend: Stable

Habitat and Ecology [top]

Habitat and Ecology: It can be found in mountain streams and rivers in coastal woodlands and redwood forest. When inactive, occurs under rocks, logs, other forest debris, and in rodent burrows and subterranean crevices. Usually breeds in flowing water. Lays eggs on undersides or rocks in foothill/mountain streams.
Systems: Terrestrial; Freshwater

Threats [top]

Major Threat(s): None known. Local populations might be impacted by deforestation, but it is not significantly threatened.

Conservation Actions [top]

Conservation Actions: None needed. It occurs in a number of protected areas.
Citation: Geoffrey Hammerson 2004. Taricha rivularis. In: IUCN 2013. IUCN Red List of Threatened Species. Version 2013.2. <>. Downloaded on 16 April 2014.
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