arenibacterium halophilum arenibacterium halophilum arenibacterium halophilum is a gram-negative, halotolerant, strictly aerobic, non-spore-forming and motile bacterium from the genus of arenibacterium. arenibacterium halophilum scientific classification domain: bacteria phylum: pseudomonadota class: alphaproteobacteria order: rhodobacterales family: rhodobacteraceae genus: arenibacterium species: a. halophilum binomial name arenibacterium halophilumbaek et al. 2020 type strain cau 1492