psychrobacter arenosus psychrobacter arenosus psychrobacter arenosus is a gram-negative, psychrotolerant, aerobic, nonmotile bacterium of the genus psychrobacter, which was isolated from coastal sea ice and sediment samples of the sea of japan. psychrobacter arenosus scientific classification domain: bacteria phylum: pseudomonadota class: gammaproteobacteria order: pseudomonadales family: moraxellaceae genus: psychrobacter species: p. arenosus binomial name psychrobacter arenosusromanenko et al. 2004 type strain cip 109036, dsm 15389, kmm 3659, r-7