arcicella aurantiaca arcicella aurantiaca arcicella aurantiaca is a gram-negative, strictly aerobic, vibrioid and non-motile bacterium from the genus of arcicella which has been isolated from stream water in kaohsiung in taiwan. arcicella aurantiaca scientific classification domain: bacteria phylum: bacteroidota class: cytophagia order: cytophagales family: spirosomaceae genus: arcicella species: a. aurantiaca binomial name arcicella aurantiacasheu et al. 2010 type strain bcrc 17969, dsm 22214, lmg 25207, tnr-18