chishuiella chishuiella chishuiella is a genus of gram-negative freshwater bacterium. it contains a single species, chishuiella changwenlii. chishuiella scientific classification domain: bacteria phylum: bacteroidota class: flavobacteriia order: flavobacteriales family: weeksellaceae genus: chishuiellazhang et al. 2014 type species chishuiella changwenliizhang et al. 2014