| Morphology | Aeromonas |
| CELLULAR |
| Staining | Gram-negative |
| Morphology | Cells straight, rod shaped with rounded ends to coccoid, 0.3-1.0 um in diameter and 1.0-3.5 um in length. Occur singly, in pairs or short chains |
| Motility | Generally motile by a single polar flagellum; peritrichous flagella may be formed on solid media in young cultures. One species is nonmotile. |
| Specialized structures | Resting stages not known |
| Division |
| COLONIAL |
| Solid surface |
| Liquid |
| Growth Parameters | Aeromonas |
| PHYSIOLOGICAL |
| Tropism | Chemoorganotrophic, using a variety of sugars and organic acids as carbon sources |
| Oxygen | Facultative anaerobes Metabolism of glucose is both respiratory and fermentative. |
| pH | |
| Temperature | Optimum temperature, 22-28`C; some strains do not grow at 35`C. |
| Requirements | |
| Products | Carbohydrates are broken down to acid or acid and gas (CO2 and H2). Nitrate is reduced to nitrite. |
| Enzymes | Oxidase-positive. Catalase-positive. |
| Unique features | .Resistant to the vibriostatic agent 2,4-diamino-6,7-diiso- propylpteridine (0/129) |
| ENVIRONMENTAL |
| Habitat | Occur in freshwater and sewage. |
| Lifestyle | |
| Pathogenicity | Some species are pathogenic to frogs and fish |
| Distribution |
| Genome | Aeromonas |
| G+C Mol % | 7-63 ( Bd, Tm). |
| Reference | Aeromonas |
| First citation | Kluyver, A.J. and C.B. van Niel (1936) Prospects for a natural system of classification of bacteria. Zentralbl. Bakteriol. Parasitenkd. Infektionskr. Hyg. Abt. II 94:369-403 |
| The Prokaryotes | p |
| Bergey's Systematatic | p 545 M. Popoff |
| Bergey's Determinative | p 190 |
| References |