roseovarius albus roseovarius albus roseovarius albus is a gram-negative, aerobic and heterotrophic bacterium from the genus of roseovarius which has been isolated from seawater from the mediterranean sea from spain. roseovarius albus scientific classification domain: bacteria phylum: pseudomonadota class: alphaproteobacteria order: rhodobacterales family: rhodobacteraceae genus: roseovarius species: r. albus binomial name roseovarius albuslucena et al. 2014 type strain 4sm10, cect 7450, cip 109942, kctc 22653 synonyms roseovarius litoralis