halorhodospira halorhodospira halorhodospira is a gram-negative genus of bacteria from the family of ectothiorhodospiraceae. halorhodospira bacteria occur in hypersaline and extreme saline habitats. halorhodospira scientific classification domain: bacteria phylum: pseudomonadota class: gammaproteobacteria order: chromatiales family: ectothiorhodospiraceae genus: halorhodospiraimhoff and süling 1997 type species halorhodospira halophila species h. abdelmalekii h. halochloris h. halophila h. neutriphila