''Hahella'' is a

Gram-negative Gram-negative bacteria are bacteria that, unlike gram-positive bacteria, do not retain the crystal violet stain used in the Gram staining method of bacterial differentiation. Their defining characteristic is that their cell envelope consists ...

, facultatively anaerobic genus of bacteria from the family of

Hahellaceae The Hahellaceae are a family of Pseudomonadota in the order of Oceanospirillales The Oceanospirillales are an order of Pseudomonadota with ten families. Description Bacteria in the Oceanospirillales are metabolically and morphologically dive ...

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Further reading