psychrobacter piscatorii psychrobacter piscatorii psychrobacter piscatorii is a gram-negative, catalase- and oxidase-positive, psychrotolerant, nonmotile bacterium of the genus psychrobacter, which was isolated from a fish-processing plant. the temperature where psychrobacter piscatorii was isolated was about 8 °c. psychrobacter piscatorii scientific classification domain: bacteria phylum: pseudomonadota class: gammaproteobacteria order: pseudomonadales family: moraxellaceae genus: psychrobacter species: p. piscatorii binomial name psychrobacter piscatoriiyumoto et al. 2010 type strain jcm 15603, ncimb 14510, t-3-2