pseudoalteromonas espejiana pseudoalteromonas espejiana pseudoalteromonas espejiana is a marine bacterium. pseudoalteromonas espejiana scientific classification domain: bacteria phylum: pseudomonadota class: gammaproteobacteria order: alteromonadales family: pseudoalteromonadaceae genus: pseudoalteromonas binomial name pseudoalteromonas espejiana(chan et al., 1978) gauthier et al., 1995