Characterization of a new strain of Aeromonas dhakensis isolated from diseased pacu fish (Piaractus mesopotamicus) in Brazil: morphological and ultrastructural aspects - Carriero, Mateus Maldonado; Maia, Antônio Augusto Mendes; Sousa, Ricardo Luiz Moro de; Silva, Flavio Henrique (Journal of Fish Diseases, 2016)