Hyperolius watsonae
family: Hyperoliidae
Species Description: Pickersgill 2007 Frog Search: Results of expeditions to eastern and southern Africa. 382
Conservation Status (definitions)
IUCN (Red List) Status Critically Endangered (CR)
Other International Status None
National Status None
Regional Status None

Country distribution from AmphibiaWeb's database: Tanzania, United Republic of



View distribution map using BerkeleyMapper.

From the IUCN Red List Species Account:


Range Description

This species is endemic to Ngezi Forest, on Pemba Island, in Tanzania. It occurs close to sea-level.

Habitat and Ecology

It appears to be dependent on lowland forest. At its only known site it was found calling in forest trees overhanging a small pool, but it was absent from the grasses and herbage at the other end of the same pool in a more open situation. It presumably breeds in water by larval development.


It appears to be a rare species. Only 10-20 males were heard calling at its only known site.

Population Trend


Major Threats

It is restricted to a tiny area where its forest habitat is at risk from harvesting of wood, and small-scale agriculture.

Conservation Actions

It occurs in the Ngezi Forest Reserve which requires careful management for this extremely rare species.

Red List Status

Critically Endangered (CR)


Listed as Critically Endangered because its extent of occurrence is less than 100 km² and its area of occupancy is less than 10 km², all individuals are in a single location, and there is a continuing decline in the extent and quality of its habitat on the island of Pemba.


Martin Pickersgill 2008. Hyperolius watsonae. The IUCN Red List of Threatened Species 2008: e.T135845A4210326. .Downloaded on 24 February 2019


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