aquabacterium hongkongensis aquabacterium hongkongensis aquabacterium hongkongensis is a bacterium of the genus aquabacterium, in the family comamonadaceae. aquabacterium hongkongensis scientific classification domain: bacteria phylum: pseudomonadota class: betaproteobacteria order: burkholderiales family: comamonadaceae genus: aquabacterium species: a. hongkongensis binomial name aquabacterium hongkongensislin et al. 2009, sp. nov.