Mount Nimba Viviparous Toad
CR

Mount Nimba Viviparous Toad

Nimbaphrynoides occidentalis

Stable

Photo: Wikimedia Commons (CC) via https://en.wikipedia.org/wiki/Nimbaphrynoides

Overview

Nimbaphrynoides is a monotypic genus of true toads from highlands in the Mount Nimba region of the West African countries of Guinea, Liberia, and Côte d'Ivoire. The sole species is Nimbaphrynoides occidentalis. Along with Nectophrynoides, Eleutherodactylus jasperi, and Limnonectes larvaepartus, Nimbaphrynoides is one of the only anurans that combine internal fertilization with ovoviviparity.

Nimbaphrynoides occidentalis faces severe threats from mining activities, particularly iron ore extraction in the Nimba Mountains, which directly destroys its specialized high-altitude grassland habitat. Agricultural expansion and human settlement encroachment further fragment the remaining suitable areas. The species' extremely restricted range makes it exceptionally vulnerable to any habitat modification, with climate change potentially altering the cool, moist conditions essential for its survival.

Threat summary

Habitat

This species inhabits high-altitude grasslands and montane savannas in the Nimba Mountains of West Africa, typically found at elevations above 1,000 meters. It requires cool, moist microhabitats within these grassland ecosystems, often associated with rocky outcrops and areas with permanent moisture.

Grassland· major

Conservation measures underway

Site/area protectionLegislation

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Frequently asked questions

Why is Mount Nimba Viviparous Toad classified as Critically Endangered?
Mount Nimba Viviparous Toad 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. Nimbaphrynoides occidentalis faces severe threats from mining activities, particularly iron ore extraction in the Nimba Mountains, which directly destroys its specialized high-altitude grassland habitat. Agricultural expansion and human settlement encroachment further fragment the remaining suitable areas. The species' extremely restricted range makes it exceptionally vulnerable to any habitat modification, with climate change potentially altering the cool, moist conditions essential for its survival.
Where does Mount Nimba Viviparous Toad live?
Mount Nimba Viviparous Toad occurs in Benin, Côte d’Ivoire, Guinea, Liberia, and Sierra Leone. Country-level distribution data is sourced from the IUCN Red List and cross-referenced with GBIF occurrences.
What are the main threats to Mount Nimba Viviparous Toad?
The main threats to Mount Nimba Viviparous Toad are 2.1, 3.2, 5.3, and ai-1. The full IUCN-classified threat record for this species is detailed on the species page.

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