hymenobacter nivis hymenobacter nivis hymenobacter nivis is a gram-negative, aerobic, rod-shaped and non-motile bacterium from the genus of hymenobacter which has been isolated from red snow from the antarctica. hymenobacter nivis scientific classification domain: bacteria phylum: bacteroidota class: cytophagia order: cytophagales family: hymenobacteraceae genus: hymenobacter species: h. mnivis binomial name hymenobacter niviskojima et al. 2016 type strain dsm 101755, nbrc 111535, nbrc 111535, strain p3