hymenobacter aquatilis hymenobacter aquatilis hymenobacter aquatilis is a gram-negative, aerobic and non-motile bacterium from the genus of hymenobacter which has been isolated from water from a mesotrophic artificial lake in korea. hymenobacter aquatilis scientific classification domain: bacteria phylum: bacteroidota class: cytophagia order: cytophagales family: hymenobacteraceae genus: hymenobacter species: h. aquatilis binomial name hymenobacter aquatiliskang et al. 2018