gelidibacter gelidibacter gelidibacter is a gram-negative and rod-shaped bacteria genus from the family of flavobacteriaceae. gelidibacter scientific classification domain: bacteria phylum: bacteroidota class: flavobacteriia order: flavobacteriales family: flavobacteriaceae genus: gelidibacterbowman et al. 1997 type species gelidibacter algens species g. algens g. gilvus g. mesophilus g. salicanalis g. sediminis