Maciel, H. M., M. G. M. Soares, and L. Prestes. “Reproduction of Piranha Serrasalmus Spilopleura Kner, 1858, on the Floodplain Lakes, Amazon, Brazil”. Biota Neotropica, vol. 11, no. 2, June 2011, //www.biotaneotropica.org.br/BN/article/view/787.