ponticoccus marisrubri ponticoccus marisrubri ponticoccus marisrubri is a gram-negative, aerobic, moderately halophilic and non-motile bacterium from the genus ponticoccus which has been isolated from seawater from the erba deep from the red sea. ponticoccus scientific classification domain: bacteria phylum: pseudomonadota class: alphaproteobacteria order: rhodobacterales family: rhodobacteraceae genus: ponticoccus species: p. marisrubri binomial name ponticoccus marisrubrizhang et al. 2017 type strain accc19863, jcm 19520, sj5a-1 synonyms ponticoccus brinium