θɹˈiː dʒˈɛnɚɹə ɪn mˈɑːtʃəkˌɪdiː, ˈæɾəpˌɑːtʃɪləs, tʃˌɪləɡlˈɑːniz, ænd jˈuːtʃɪlˌɪtʃθiz, ˈɔːlsoʊ pəzˈɛs ɐn ˈoːɹəl sˈʌkɚ, fˈɔːɹmd baɪ ðə lˈɪps ænd pˈɑːɹt ʌvðə bˈɑːɹbəlz.
Three genera in Mochokidae, Atopochilus, Chiloglanis, and Euchilichthys, also possess an oral sucker, formed by the lips and part of the barbels.