Aeromonas caviae is a later and illegitimate synonym of Aeromonas punctata. In order to secure continuity in literature, it is proposed to use the trivial term "caviae type" in connection with the species name A. punctata temporarily especially for strains isolated in connection to diarrhoea in children. Aeromonas eucrenophila sp. nov. is described, type strain in NCMB 74. The new aerogenic psychrotrophic Aeromonas species is separated genotypically from Aeromonas hydrophila and Aeromonas punctata (caviae type).