The genus Aeromonas was re-categorized from the family Vibrionaceae to the family Aeromonadaceae in the mid-1980s, when phylogenetic evidence from molecular studies became available to support this distinction
The genus Aeromonas has been divided into two major groups
●Motile, mesophilic species, including eight that can cause disease in humans
●Non-motile, psychrophilic species that generally cause disease only in fish.