Integrative use of DNA barcode and morphology reveal high level of diversity in the ornamental fish on the lower Amazon basin - Elciane Araújo de Freitas; Dayana Batista dos Santos; Charles Samuel Moraes Ferreira; Cárlison Silva-Oliveira; Grazielle Fernanda Evangelista-Gomes; Ivana Barbosa Veneza (PLoS ONE)