aestuarium aestuarium aestuarium is a gram-negative, aerobic and non-motile bacterial genus from the family of rhodobacteraceae with on known species (aestuarium zhoushanense). aestuarium zhoushanense has been isolated from a sample of tidal flat from the east china sea in zhoushan. aestuarium scientific classification domain: bacteria phylum: pseudomonadota class: alphaproteobacteria order: rhodobacterales family: rhodobacteraceae genus: aestuariumyu et al. 2019 type species aestuarium zhoushanense species a. zhoushanense