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Simpsonichthys picturatus 

Scope: Global
Language: English
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Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Chordata Actinopterygii Cyprinodontiformes Rivulidae

Scientific Name: Simpsonichthys picturatus Costa, 2000

Assessment Information [top]

Red List Category & Criteria: Vulnerable A2ce ver 3.1
Year Published: 2009
Date Assessed: 2007-03-01
Annotations:
Needs updating
Assessor(s): Reis, R & Lima, F.
Reviewer(s): Collen, B., Darwall, W., Ram, M. & Smith, K. (SRLI Freshwater Fish Evaluation Workshop)
Justification:
Assessed as Vulnerable due to an inferred population decline of greater than 30% over the past ten years. This is due to a decline in habitat quality and an increase in water pollution, in the São Francisco River basin. Also because the majority of its congeners are similarly threatened as well.

Geographic Range [top]

Range Description:This species is found in northeastern Brazil. As with its congeners, the distribution of the species is very restricted (Lima pers. comm. 2007). It is only known from the type locality given as Bahia, Volta das Pedras, Sao Francisco River basin, but its exact location is unknown.
Countries occurrence:
Native:
Brazil
Additional data:
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population:No population information known.
Current Population Trend:Unknown
Additional data:
Population severely fragmented:No

Habitat and Ecology [top]

Habitat and Ecology:S. picturatus is a pelagic (area of water not near the bottom) species. Occurs in small ephemeral bogs and swamps.
Systems:Freshwater

Threats [top]

Major Threat(s): The restricted nature of the species means that it is particularly vulnerable to human impacts. Its other major threat is from the modification of the wetlands in which it inhabits.

Human population growth and an increase in agricultural and industrial activities, as well as dam construction and mineral extraction have caused environment degradation in the São Francisco river. It was one of the main fishing resources in Brazil, but the fisheries are presently experiencing a decline (Gonçalves et al. 2006).

In addition, there has been extensive deforestation in the region. The São Francisco basin has lost 64.4% of its original forest (based on an estimate of the extent of closed canopy forest in existence 8,000 years ago in the absence of human impact), and the basin is now primarily cropland (Water Resources eAtlas 2005).

The areas with the highest population and industrial concentration along the Basin are located in the upper São Francisco. Discharge of untreated domestic and industrial wastewaters from these areas, as well as the disposal of mineral extraction and processing wastes, are the main sources of water degradation along the Basin (Diegues 1994).

Conservation Actions [top]

Conservation Actions: There are no conservation measures in place and research and action is needed to establish if the inferred decline of population is correct, and the increase in water pollution needs to be reversed; this major problem in the São Francisco River basin affects many freshwater species.

Citation: Reis, R & Lima, F. 2009. Simpsonichthys picturatus. The IUCN Red List of Threatened Species 2009: e.T167679A6366763. . Downloaded on 25 September 2018.
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