pelagibius pelagibius pelagibius is a gram-negative and strictly aerobic genus of bacteria from the family rhodovibrionaceae with one known species (pelagibius litoralis). pelagibius litoralis has been isolated from coastal seawater from korea. pelagibius scientific classification domain: bacteria phylum: pseudomonadota class: alphaproteobacteria order: rhodospirillales family: rhodovibrionaceae genus: pelagibiuschoi et al. 2009 type species pelagibius litoralis species p. litoralis