psychromarinibacter psychromarinibacter psychromarinibacter is a gram-negative, strictlyaerobic and motile genus of bacteria from the family of rhodobacteraceae with one known species (psychromarinibacter halotolerans). psychromarinibacter halotolerans has been isolated from seawater from the yellow sea. psychromarinibacter scientific classification domain: bacteria phylum: pseudomonadota class: alphaproteobacteria order: rhodobacterales family: rhodobacteraceae genus: psychromarinibacterqiao et al. 2017 type species psychromarinibacter halotolerans species p. halotolerans