chryseobacterium rigui chryseobacterium rigui chryseobacterium rigui is a gram-negative, rod-shaped and non-motile bacteria from the genus of chryseobacterium. chryseobacterium rigui scientific classification domain: bacteria phylum: bacteroidota class: flavobacteriia order: flavobacteriales family: weeksellaceae genus: chryseobacterium species: c. rigui binomial name chryseobacterium riguipark et al. 2013 type strain cj16, jcm 18078, kacc 16560