methylophaga marina methylophaga marina methylophaga marina is an obligately methylotrophic, gram-negative, strictly aerobic, motile, rod-shaped bacteria, the type species of its genus. its type strain is atcc 35842 (= ncmb 2244). methylophaga marina scientific classification domain: bacteria phylum: pseudomonadota class: gammaproteobacteria order: thiotrichales family: piscirickettsiaceae genus: methylophaga species: m. marina binomial name methylophaga marinajanvier et al. 1985