ChromatiaceaeNitrosococcusAllochromatiumRheinheimeraThiocapsaMarichromatiumThiorhodococcusThiocystisThiorhodovibrioThioflavicoccusLamprocystisArsukibacteriumImhoffiellaThiohalocapsaCandidatus NitrosoglobusThiodictyonChromatiumThiobacaCandidatus ThiosymbionThermochromatiumCaldichromatiumThiospirillumRhabdochromatiumThiococcusLamprobacterHalochromatiumThioalkalicoccusCandidatus Nitrosacidococcus