aurantimicrobium aurantimicrobium aurantimicrobium is a gram-positive, aerobic and non-motile genus of bacteria from the family of microbacteriaceae. aurantimicrobium minutum has been isolated from water of a river in japan. aurantimicrobium scientific classification domain: bacteria phylum: actinomycetota class: actinomycetia order: micrococcales family: microbacteriaceae genus: aurantimicrobiumnakai et al. 2015 type species aurantimicrobium minutumnakai et al. 2015 species a. minutum nakai et al. 2015 a. photophilum hahn et al. 2021