L. F. de A. Montag, T. M. da S. Freitas, R. D. de O. Raiol, and M. V. da Silva, “Length-weight relationship and reproduction of the guppy Poecilia reticulata (Cyprinodontiformes: Poeciliidae) in urban drainage channels in the Brazilian city of Belém”, Biota Neotrop., vol. 11, no. 3, Sep. 2011.