The Aeromonadaceae are Gram-negative bacteria. The species are facultative anaerobic organisms.George M. Garrity: Bergey's Manual of Systematic Bacteriology. 2. Auflage. Springer, New York, 2005, Volume 2: The Proteobacteria, Part B: The Gammaproteobacteria List of Prokaryotic names with Standing in Nomenclature The cells are rod-shaped. They are mostly found in estuarine waters and fresh water, also in soil and sewage. Some are pathogenic for humans and other animals such as fishes and frogs.
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