Obligatory anaerobic, chemoheterotrophic bacterium.
Isolated from a slurry of sediment and formation water samples collected from a commercial natural gas and water-producing well in Chiba prefecture, Japan (35.41N 140.35E).
Fidelibacter multiformis gen. nov., sp. nov., isolated from a deep subsurface aquifer and proposal of Fidelibacterota phyl. nov., formerly called Marine Group A, SAR406 or Candidatus Marinimicrobia.