paraphaeobacter paraphaeobacter paraphaeobacter is a gram-negative and aerobic genus of bacteria from the family of rhodobacteraceae with one known species (paraphaeobacter pallidus). paraphaeobacter pallidus has been isolated from water from the bohai sea in china. paraphaeobacter scientific classification domain: bacteria phylum: pseudomonadota class: alphaproteobacteria order: rhodobacterales family: rhodobacteraceae genus: paraphaeobactercai et al. 2017 type species paraphaeobacter pallidus species p. pallidus