Montag, Luciano Fogaça de Assis, et al. “Length-Weight Relationship and Reproduction of the Guppy Poecilia Reticulata (Cyprinodontiformes: Poeciliidae) in Urban Drainage Channels in the Brazilian City of Belém”. Biota Neotropica, vol. 11, no. 3, Sept. 2011, https://www.biotaneotropica.org.br/BN/article/view/838.