perexilibacter aurantiacus perexilibacter aurantiacus perexilibacter aurantiacus is a gram-negative, strictly aerobic and rod-shaped bacterium from the genus of perexilibacter which has been isolated from sediments from the carp island on palau. perexilibacter aurantiacus scientific classification kingdom: bacteria phylum: bacteroidota class: cytophagia order: cytophagales family: flammeovirgaceae genus: perexilibacter species: p. aurantiacus binomial name perexilibacter aurantiacusyoon et al. 2007 type strain dsm 26272, iam 15413, jcm 23194, kctc 12867, mbic 06993, shu-f-uv2-2