Red List Category
for more information about the Red List categories and criteria
Justification of Red List category
This species was rediscovered in 2006 following the last sighting in 1991. It is currently known from a single location where 29 mature individuals were seen in 2011 and 21 in 2012. While it may also persist at other sites, the population is likely to be tiny and therefore it is classified as Critically Endangered.
20-49 mature individuals
Distribution size (breeding/resident):
Land-mass type - shelf island - Continental islands include all other islands or island groups. Generally they were once part of continents and lie on a continental shelf of < 200 m sea depth.
Realm - Afrotropical - realm
IUCN Ecosystem -- Freshwater biome