hahellaceae hahellaceae the hahellaceae are a family of pseudomonadota in the order of oceanospirillales. hahellaceae scientific classification domain: bacteria phylum: pseudomonadota class: gammaproteobacteria order: oceanospirillales family: hahellaceaegarrity et al. 2005 genera allohahella endozoicomonas hahella halospina kistimonas sansalvadorimonas zooshikella