pseudoalteromonas rubra pseudoalteromonas rubra pseudoalteromonas rubra is a marine bacterium. pseudoalteromonas rubra scientific classification domain: bacteria phylum: pseudomonadota class: gammaproteobacteria order: alteromonadales family: pseudoalteromonadaceae genus: pseudoalteromonas binomial name pseudoalteromonas rubra(gauthier 1976) gauthier et al., 1995 synonyms alteromonas rubra