ðɪs fˈæmɪli kəntˈeɪnz ðə smˈɔːlɪst dʒˈɪmnətˌɪfɔːɹmz, mˌaɪkɹoʊstˈɜːnɑːɹtʃəs bɹˈɛvɪs ænd hˌaɪpoʊpˈaɪɡəs hˌoʊdᵻmˈɑːni, wˌɪtʃ ɹˈiːtʃ ɐ mˈæksɪməm tˈoʊɾəl lˈɛŋθ ʌv ænd ɹᵻspˈɛktɪvli.
This family contains the smallest gymnotiforms, Microsternarchus brevis and Hypopygus hoedemani, which reach a maximum total length of  and  respectively.