alkalispirillum alkalispirillum "alkalispirillum" is a moderately halophilic and alkaliphilic genus of bacteria from the family of ectothiorhodospiraceae with one known species (alkalispirillum mobile). alkalispirillum scientific classification domain: bacteria phylum: pseudomonadota class: gammaproteobacteria order: chromatiales family: ectothiorhodospiraceae genus: "acidihalobacter"rijkenberg et al. 2002 type species alkalispirillum mobile species a. mobile