| T04606 | ebh | Endosymbiont of Bathymodiolus septemdierum |
| T07716 | bthg | Bathymodiolus thermophilus thioautotrophic gill symbiont |
| T08924 | eag | Candidatus Ecksteinia adelgidicola |
| T10208 | cbly | Candidatus Competibacteraceae bacterium Lyne_18-Q3-R50-59_BATAC.383_cln |
| T01300 | gpb | Gamma proteobacterium HdN1 |
| T04530 | enm | Endosymbiont of unidentified scaly snail isolate Monju |
| T07679 | eeu | Endosymbiont of Euscepes postfasciatus |
| T07680 | ifo | Isorropodon fossajaponicum endosymbiont |
| T07717 | aphf | Abyssogena phaseoliformis symbiont |
Organism group: unclassified Gammaproteobacteria