aeromonadales aeromonadales the aeromonadales are an order of pseudomonadota, with 10 genera in two families. the species are anaerobic. the cells are rod-shaped. some species of this order are motile by a single polar flagellum; others are not motile. aeromonadales aeromonas hydrophila scientific classification domain: bacteria phylum: pseudomonadota class: gammaproteobacteria order: aeromonadales families aeromonadaceae succinivibrionaceae