roseisalinus roseisalinus in taxonomy, roseisalinus is a genus of the rhodobacteraceae. roseisalinus scientific classification domain: bacteria phylum: pseudomonadota class: alphaproteobacteria order: rhodobacterales family: rhodobacteraceae genus: roseisalinus species roseisalinus antarcticus synonyms roseisalinus labrenz et al. 2005