Drahkens are a six-limbed, reptilian species that grow up to a meter in body length with a longer tail. They are sentient and actively communicate with humans. The origins of the xenos are unclear. Records of the system from the Jericho Sector era do not identify any sapient or even protosapient species. Warp contamination could have induced a metamorphosis in a native life form, but there are few signs of contamination among the human population. Alternatively, it could be that Drahkens are not native to the Tabius Rasa system. If that is the case, they might be colonising the planet as well, though the absence of any indications of spacefl ight fail to support this theory.
Relation to humans
The peculiar environement of Tabius Rasa (oceans high in phosphates and potassium salts,four moons, surface winds frequently exceeding a 150 km/h, very small amount of minerals and no surface plants harvestable for foodstuffs/hardwoods) has made many scholars question the way the colonoy had survived with small resources and no technology of note.
It has been clearly noticed that the human colonists treat the Drahkens with great deference, often carrying them on their shoulders, and in some circles treating them as peers. Tabius Rasa lacking a central government, each community exists as an independent city-state which, in some cases, include the Drahkens as part of the ruling elite.
A Deathwatch inflitration team report states that after the questioning of several of both humans and xenos, all humans seemed to radiate an unusual degree of contentment as detected by psychich probe. The xenos on the other hand, seemed to be capable of reading and projecting emotions onto humans. Their empathy may thus be the reason for the peaceful nature of the human population of Tabius Rasa.