roseomonas aestuarii roseomonas aestuarii roseomonas aestuarii is a species of gram negative, strictly aerobic, coccobacilli-shaped, orange-colored bacterium. it was first isolated from an estuarine environment in india, and the new species name was proposed in 2010. roseomonas aestuarii scientific classification domain: bacteria phylum: pseudomonadota class: alphaproteobacteria order: rhodospirillales family: acetobacteraceae genus: roseomonas species: r. aestuarii binomial name roseomonas aestuariiramana 2010