Phrynobatrachus nanus is a species of frog in the family Phrynobatrachidae. It is endemic to the Central African Republic and is only known from its type locality, Bouala (originally spelled "Buala"), at above sea level on the Ouham River. Common name Buala river frog has been coined for this species. Taxonomy Phrynobatrachus nanus was described by German zoologist Ernst Ahl in 1925 as Pararthroleptis nanus based a single specimen, the holotype. Phrynobatrachus nanus is the type species of the genus Pararthroleptis Ahl, 1925 "1923". However, the genus is currently considered a synonym of Phrynobatrachus. Description Phrynobatrachus nanus has an indistinct tympanum. There are two metatarsal tubercles. The dorsum is olive-brownish and has six to eight greyish flecks, about as large as the eye. The thighs have three or four bands. Ecology There are no observations of this species after its discovery, and its ecology is essentially unknown. References nanus Frogs of Africa Amphibians of the Central African Republic Endemic fauna of the Central African Republic Amphibians described in 1925 Taxa named by Ernst Ahl Taxonomy articles created by Polbot