This species occurs in the foothills of the main mountain range in western Cameroon (excluding Mount Cameroon). It is known from Nkongjock, Nta Ali, the Bamileke Plateau, Mount Manenguba, Mount Kupe, and the Rumpi Hills. It has recently been recorded from the Oban Hills in Nigeria (M. Gartshore pers. comm.). Its altitudinal range is 750-1,400m asl.
Habitat and Ecology
It lives in and near cold, fast-flowing streams, in grassland as well as forest. It does not require tree cover, and in Nkongsamba it can be found in urban areas. It prefers colder, faster water than does Conraua goliath, and the tadpoles live in fast, even torrential, water. Around Nkongsamba, Conraua robusta, C. crassipes and C. goliath occur sympatrically.
It is an uncommon species.
This large species is harvested for food and is considered a delicacy. Despite being somewhat adaptable, it is presumably adversely affected by the loss of forest habitat for agriculture, logging, and human settlements; the sedimentation of its breeding streams is probably also having a detrimental impact on the species.
It occurs in the Cross River National Park in Nigeria. There is a need to work with local communities to ensure that the harvest of this species from the wild is managed sustainably.
Red List Status
Listed as Vulnerable, because its Extent of Occurrence is less than 20,000 km2 and its Area of Occupancy is less than 2,000 km2, its distribution is severely fragmented, and there is a continuing decline in the extent and quality of its habitat.
Jean-Louis Amiet, Mary Gartshore 2004. Conraua robusta. The IUCN Red List of Threatened Species 2004: e.T58254A11758208. http://dx.doi.org/10.2305/IUCN.UK.2004.RLTS.T58254A11758208.en .Downloaded on 23 January 2019