Nganha Night Frog
CR

Nganha Night Frog

Astylosternus nganhanus

Declining

Photo: (c) jeanlouisamiet, some rights reserved (CC BY-NC-SA)

Overview

Astylosternus nganhanus is a species of frog in the family Arthroleptidae. It is endemic to Cameroon and known from Mount Nganha on the Adamawa Plateau; it is probably endemic to that area. Common name Nganha night frog has been coined for it. This poorly known species is only known from five specimens.

Astylosternus nganhanus faces severe threats from rapid deforestation and agricultural expansion across its limited range in Cameroon's montane forests. Mining activities and infrastructure development have fragmented its specialized stream habitats, while climate change threatens to alter the cool, humid conditions essential for this endemic frog's survival. The species' extremely restricted distribution makes it particularly vulnerable to local extinctions from habitat degradation.

Threat summary

Habitat

This endemic Cameroonian frog inhabits pristine montane forest streams and adjacent riparian vegetation at elevations between 1,200-2,000 meters. It requires cool, well-oxygenated flowing water with rocky substrates and dense forest canopy cover that maintains stable humidity levels.

Grassland· major

Conservation measures underway

Species recovery

Other threatened species in ARTHROLEPTIDAE

Leptopelis vermiculatusEN

Leptopelis vermiculatus

Unknown
EN

Bioko Squeaker Frog

Arthroleptis bioko

Declining
EN

Wager's Bush Squeaker

Arthroleptis wageri

Unknown
Leptopelis parkeriEN

Leptopelis parkeri

Unknown

Threatened in Cameroon

VU

Justicia orbicularis

Declining
Brachystephanus kupeensisCR

Brachystephanus kupeensis

Declining
VU

Whitfieldia preussii

Declining
EN

Justicia leucoxiphus

Declining

Frequently asked questions

Why is Nganha Night Frog classified as Critically Endangered?
Nganha Night Frog is classified as Critically Endangered — facing an extremely high risk of extinction in the wild — because population sizes are very small, declining sharply, or restricted to a tiny range. Astylosternus nganhanus faces severe threats from rapid deforestation and agricultural expansion across its limited range in Cameroon's montane forests. Mining activities and infrastructure development have fragmented its specialized stream habitats, while climate change threatens to alter the cool, humid conditions essential for this endemic frog's survival. The species' extremely restricted distribution makes it particularly vulnerable to local extinctions from habitat degradation.
Where does Nganha Night Frog live?
Nganha Night Frog occurs in Cameroon. Country-level distribution data is sourced from the IUCN Red List and cross-referenced with GBIF occurrences.
What are the main threats to Nganha Night Frog?
The main threats to Nganha Night Frog are 2.1, 5.3, ai-1, and ai-2. The full IUCN-classified threat record for this species is detailed on the species page.

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