ðiːz spˈiːsiːz ɑːɹ fˈaʊnd ɪn lˈɑːɹdʒ ɹˈɪvɚz, pɹaɪmˈɛɹᵻli ɪn ˈɛɹiəz wɪð ɐ ɹˈɑːki bˈɑːɾəm ænd ɐ mˈɑːdɚɹət ɔːɹ stɹˈɔŋ kˈɜːɹənt.
These species are found in large rivers, primarily in areas with a rocky bottom and a moderate or strong current.