Wikipedia
Rhodoferax is a genus of Betaproteobacteria belonging to the purple nonsulfur bacteria, a polyphyletic group of phototrophic bacteria. Originally, Rhodoferax species were included in the Rhodocyclus genus as the Rhodocyclus gelatinous-like group. The Rhodoferax genus was first proposed in 1991 to accommodate the taxonomic and phylogenetic discrepancies arising from its inclusion in the Rhodocyclus genus. Rhodoferax currently comprises three described species: R. fermentans, R. antarcticus, and R. ferrireducens. The most recent addition, R. ferrireducens, lacks the typical phototrophic character common to the other Rhodoferax species. This difference has led researchers to propose the creation of a new genus, Albidoferax, to accommodate this divergent species.