Overview

Distribution

Range Description

A poorly known species. This species occurs in the Tapajós River basin, Brazil.
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South America: Tapajós River basins.
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Tapajós River basin, Brazil.
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Ecology

Habitat

Habitat and Ecology

Habitat and Ecology
B. gracilis is a benthopelagic (ecological region at the lowest level of water body) species. Occurs in small rivers and creeks, swimming in the mid water catching insects that fall into the water.

Systems
  • Freshwater
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Environment

benthopelagic; 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 in view of its wide distribution and the lack of any known major widespread threats. While threats exist in the Tapajos basin, a lack of knowledge of the species mean that it is unclear how they might impact this species. Further research would be useful in confirming its status.
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Population

Population
Bryconops is a very common genus within the Tapajos river basin.

Population Trend
Unknown
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Threats

Major Threats
The headwaters of the Tapajos are under severe anthropogenic disturbance. The area was a mix of tropical forest and savanna forest. These forests have been extensively replaced with large scale agriculture and plantations. In many areas the only forest left is the riparian zone.

A new road (A364) is built between Cuiaba and Santa Rem is a cause of great concern to the region as it is providing access into the Amazon.

It is unclear how these threats are impacting this species directly, as it is so poorly known but there is no particular reason to consider B. gracilis threatened.
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Least Concern (LC)
  • IUCN 2006 2006 IUCN red list of threatened species. www.iucnredlist.org. Downloaded July 2006.
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Management

Conservation Actions

Conservation Actions
There are no conservation measures in place and research into general biology and ecology (habitat status and population trends) are required.
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