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.
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.