Overview
Distribution
South America: Tapajós River basins.
-
Lima, F.C.T., L.R. Malabarba, P.A. Buckup, J.F. Pezzi da Silva, R.P. Vari, A. Harold, R. Benine, O.T. Oyakawa, C.S. Pavanelli, N.A. Menezes, C.A.S. Lucena, M.C.S.L. Malabarba, Z.M.S. Lucena, R.E. Reis, F. Langeani, C. Moreira et al. ⦠2003 Genera Incertae Sedis in Characidae. p. 106-168. In R.E. Reis, S.O. Kullander and C.J. Ferraris, Jr. (eds.) Checklist of the Freshwater Fishes of South and Central America. Porto Alegre: EDIPUCRS, Brasil. (Ref. 38376)
http://www.fishbase.org/references/FBRefSummary.php?id=38376&speccode=10622
© FishBase
Source:
FishBase
Trusted
Range Description
A poorly known species. This species occurs in the Tapajós River basin, Brazil.
© International Union for Conservation of Nature and Natural Resources
Source:
IUCN
Trusted
Ecology
Habitat
Habitat and Ecology
Habitat and Ecology
Systems
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
© International Union for Conservation of Nature and Natural Resources
Source:
IUCN
Trusted
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.
© International Union for Conservation of Nature and Natural Resources
Source:
IUCN
Trusted
Trends
Population
Population
Population Trend
Bryconops is a very common genus within the Tapajos river basin.
Population Trend
Unknown
© International Union for Conservation of Nature and Natural Resources
Source:
IUCN
Trusted
Threats
Least Concern (LC)
-
IUCN 2006 2006 IUCN red list of threatened species. www.iucnredlist.org. Downloaded July 2006.
http://www.fishbase.org/references/FBRefSummary.php?id=57073
© FishBase
Source:
FishBase
Trusted
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.
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.
© International Union for Conservation of Nature and Natural Resources
Source:
IUCN
Trusted
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.
© International Union for Conservation of Nature and Natural Resources
Source:
IUCN
Trusted
