Overview

Distribution

Range Description

This species has been recorded (with museum specimens) in Argentina, Bolivia and Brazil from the Paraguay basin in the upper reaches and not in the lowlands. It is likely to be found in Paraguay itself, although this awaits confirmation.
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South America: Paraguay and Beni River basins.
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Paraná/Paraguay and Beni River basins: Argentina, Bolivia and Brazil.
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Physical Description

Size

Max. size

20.0 cm SL (male/unsexed; (Ref. 36389))
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Ecology

Habitat

Habitat and Ecology

Habitat and Ecology
S. nudiventris is a demersal (living at or near the bottom of the water body) species. Prefers rivers which are of medium flow rate, which are draining the plateau areas. Shallow clear water rivers with mixed rock and sandy bottom.

Systems
  • Freshwater
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Environment

demersal; freshwater
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Conservation

Conservation Status

IUCN Red List Assessment


Red List Category
LC
Least Concern

Red List Criteria

Version
3.1

Year Assessed
2009

Assessor/s
Reis, R & Lima, F.

Reviewer/s
Collen, B., Darwall, W., Ram, M. & Smith, K. (SRLI Freshwater Fish Evaluation Workshop)

Contributor/s

Justification
Assessed as Least Concern due this species having a sizeable distribution and lack of threats across the range.
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Population

Population
Not a common species.

Population Trend
Stable
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Threats

Major Threats
The species has disappeared from Manso dam area due to flooding of its river. However this represents a very small proportion of the river basin, and so is not considered a significant threat to the species.
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Least Concern (LC)
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Management

Conservation Actions

Conservation Actions
There are no conservation measures in place.
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