de Pádua, S.B., Martins, M.L., Carraschi, S.P., Da Cruz, C. & Ishikawa, M.M. (2012) Trichodina heterodentata (Ciliophora: Trichodinidae): a new parasite for Piaractus mesopotamicus (Pisces: Characidae). Zootaxa, 3422 (1), 62–68.