Post by surroundx on Mar 29, 2015 7:11:40 GMT
"The species is only known from three separate records within an estimated 100 km stretch of the São Francisco River and its tributaries (Brazil). The flow of the São Francisco River is impacted by dams, which due to drought conditions in recent years has lowered the flow in the lower reaches considerably. Additionally, deforestation in the upper basin has resulted in large levels of silt moving down the river. Sewage pollution is also considered to be a problem, as the majority of human settlements along the river do not have adequate sanitation. As the species is only known from a single river system, the number of locations is one. Recent survey work in 2009 across the majority of the species' range failed to find any specimens of the species. Therefore the species is assessed as Critically Endangered Possibly Extinct. Surveys are required within the species' known range and wider in the states of Sergipe and Alagoas to determine the full range of the species."
Source:
www.iucnredlist.org/details/197644/0
Source:
www.iucnredlist.org/details/197644/0