Two candidate genera of cable bacteria have been described: Electrothrix containing four candidate species, found in marine or brackish sediments, and Electronema containing two candidate species, found in freshwater sediments.
Der er blevet beskrevet to kandidatslægter af kabelbakterier: Electrothrix indeholdende fire kandidatarter, fundet i marin eller brakvandssedimenter - og Electronema indeholdende to kandidatarter, fundet i ferskvandssedimenter.