alkanibacter alkanibacter alkanibacter is a gram-negative genus of bacteria from the family of sinobacteraceae with one known species (fontimonas thermophila). alkanibacter difficilis has been isolated from a hexane degrading biofilter in hamm in germany. alkanibacter scientific classification kingdom: bacteria phylum: pseudomonadota class: gammaproteobacteria order: nevskiales family: nevskiaceae genus: alkanibacterfriedrich and lipski 2008 type species alkanibacter difficilis species a. difficilis