[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Domain Bacteria Woese et al. 1990
     Phylum "Proteobacteria" Garrity et al. 2005 see Superphylum Proteobacteria Craig et al. 2010
       Class Gammaproteobacteria Garrity et al. 2005
         Order Aeromonadales Martin-Carnahan and Joseph 2005
           Family Aeromonadaceae Colwell et al. 1986
             Genus Aeromonas Stanier 1943 (Approved Lists 1980)
               [Aeromonas hydrophila] (Chester 1901) Stanier 1943 (Approved Lists 1980)
                 1 Aeromonas hydrophila subsp. hydrophilaᵀ (Chester 1901) Schubert 1964 (Approved Lists 1980)
                 2 Aeromonas hydrophila subsp. anaerogenes Schubert 1964 (Approved Lists 1980)
                 3 Aeromonas hydrophila subsp. dhakensis Huys et al. 2002
                 4 Aeromonas hydrophila subsp. ranae Huys et al. 2003