They scrape and bite food of many kinds as well as stirring up the bottom sediment, filtering out larger particles with the papillae around their mouths.
ðeɪ skɹˈeɪp ænd bˈaɪt fˈuːd ʌv mˈɛni kˈaɪndz æz wˈɛl æz stˈɜːɹɪŋ ˌʌp ðə bˈɑːɾəm sˈɛdɪmənt, fˈɪltɚɹɪŋ ˈaʊt lˈɑːɹdʒɚ pˈɑːɹɾɪkəlz wɪððə pˈæpɪlˌiː ɚɹˈaʊnd ðɛɹ mˈaʊðz.