halofilum halofilum halofilum is a gram-negative and facultative anaerobic genus of bacteria from the family of ectothiorhodospiraceae with one known species (halofilum ochraceum). halofilum ochraceum has been isolated from a marine solar saltern from the coast of weihai in china. halofilum scientific classification domain: bacteria phylum: pseudomonadota class: gammaproteobacteria order: chromatiales family: ectothiorhodospiraceae genus: halofilumxia et al. 2017 type species halofilum ochraceum