Cardioglossa is a genus of frogs in the family Arthroleptidae known as long-fingered frogs.[1] They are native to western and central Africa, with the greatest species richness in Cameroon.[2][3] They are found near streams in lowland and mountain forests, but also occur in other highland habitats near streams at up to 2,700 m (8,900 ft) in altitude.[2][3] These are small frogs with a snout-to-vent length of 2 to 4 cm (0.8–1.6 in). Some of the more localized species are threatened.[2][3][4]