pseudomaribius pseudomaribius pseudomaribius is a gram-negative and non-motile genus of bacteria from the family of rhodobacteraceae with one known species (pseudomaribius aestuariivivens). pseudomaribius aestuariivivens has been isolated from tidal flat sediments from the yellow sea in korea. pseudomaribius scientific classification domain: bacteria phylum: pseudomonadota class: alphaproteobacteria order: rhodobacterales family: rhodobacteraceae genus: pseudomaribiuspark et al. 2018 type species pseudomaribius aestuariivivens species p. aestuariivivens