coprobacter fastidiosus coprobacter fastidiosus coprobacter fastidiosus is a gram-negative, obligately anaerobic, rod-shaped, non-spore-forming and non-motil bacterium from the genus of coprobacter which has been isolated from the faeces of an infant in russia. coprobacter fastidiosus scientific classification domain: bacteria phylum: bacteroidota class: bacteroidia order: bacteroidales family: barnesiellaceae genus: coprobacter species: c. fastidiosus binomial name coprobacter fastidiosusshkoporov et al. 2013 type strain dsm 26242, nsb1, vkm b-2743