Montag, L.F. de A., Freitas, T.M. da S., Raiol, R.D. de O. and Silva, M.V. da 2011. Length-weight relationship and reproduction of the guppy Poecilia reticulata (Cyprinodontiformes: Poeciliidae) in urban drainage channels in the Brazilian city of Belém. Biota Neotropica. 11, 3 (Sep. 2011).