The dorsum is densely covered with small, round warts.

[4] Conraua robusta occurs in and near cold, fast-flowing streams in both grassland and forest areas at elevations of 750–1,400 m (2,460–4,590 ft) above sea level; it does not require tree cover and can be found in some urban areas.

It is sympatric with C. crassipes and C. goliath in parts of its range; it prefers colder, faster water than the latter.

[1] Conraua robusta is an uncommon species that is probably negatively affected by habitat loss and deterioration caused by agriculture, logging, and human settlements.

This species is found in the Cross River National Park (Nigeria).