variibacter variibacter variibacter is a genus of bacteria from the family nitrobacteraceae with one known species (variibacter gotjawalensis). variibacter scientific classification domain: bacteria phylum: pseudomonadota class: alphaproteobacteria order: hyphomicrobiales family: nitrobacteraceae genus: nitrobacteraceaekim et al. 2014 type species variibacter gotjawalensis species v. gotjawalensis