flavobacterium croceum flavobacterium croceum flavobacterium croceum is a gram-negative, rod-shaped and non-motile bacterium from the genus of flavobacterium which has been isolated from activated sludge from pohang in korea. flavobacterium croceum scientific classification domain: bacteria phylum: bacteroidota class: flavobacteriia order: flavobacteriales family: flavobacteriaceae genus: flavobacterium species: f. croceum binomial name flavobacterium croceumpark et al. 2006 type strain cip 109940, dsm 17960, emb47, kctc 12611