cyclobacterium cyclobacterium cyclobacterium is a mesophilic, neutrophilic, chemoorganotrophic and aerobic bacterial genus from the family of cyclobacteriaceae. cyclobacterium bacteria occur in marine habitats cyclobacterium scientific classification domain: bacteria phylum: bacteroidota class: cytophagia order: cytophagales family: cyclobacteriaceae genus: cyclobacteriumraj and maloy 1990 type species cyclobacterium marinum species c. amurskyense c. caenipelagi c. halophilum c. jeungdonense c. lianum c. marinum c. qasimii c. xiamenense synonyms cyclibacterium