"The Rhodobacteraceae are a family of proteobacteria, given their own order within the alpha subgroup. Like all proteobacteria, they are gram-negative. It contains chemoorganotrophs and photoheterotrophs bacteria. Many occur in aquatic habitats.In taxonomy, the Rhodobacteraceae are a family of the Rhodobacterales."@en . . "* Rhodobacter group" . "* Roseobacter group" . "Rhodobacteraceae"@en . . . "* alpha-3 proteobacteria" . "lightgrey"@en . .