rhodopirellula rosea rhodopirellula rosea rhodopirellula rosea is a gram-negative and motile bacterium from the genus of rhodopirellula which has been isolated from a dead ark clam (scapharca broughtonii) from the gangjin bay in korea. rhodopirellula rosea scientific classification domain: bacteria phylum: planctomycetota class: planctomycetia order: pirellulales family: pirellulaceae genus: rhodopirellula species: r. rosea binomial name rhodopirellula rosearoh et al. 2014 type strain jcm 17759, kacc 15560, strain lhwp3