These dark and slender fish barely reach  in length and are limited to rapids in the Western Congo River basin in DR Congo/Congo Brazzaville.
ðiːz dˈɑːɹk ænd slˈɛndɚ fˈɪʃ bˈɛɹli ɹˈiːtʃ ɪn lˈɛŋθ ænd ɑːɹ lˈɪmɪɾᵻd tə ɹˈæpɪdz ɪnðə wˈɛstɚn kˈɑːŋɡoʊ ɹˈɪvɚ bˈeɪsən ɪn dˌiːˈɑːɹ kˈɑːŋɡoʊ slˈæʃ kˈɑːŋɡoʊ bɹˈæzəvˌɪl.