Brachyura

Brachyura is a planet that was annexed to the T'au Empire during its First Sphere Expansion.

It is populated by a xenos species of tiny, dextrous-limbed crustaceans.

Due to the shortage of T'au population by the end of the First Sphere Expansion, the Water Caste sought to further integrate them into the empire by assigning them to the delicate assembly of the minuscule plasma generators needed to fuel the latest Earth Caste inventions, a task which they were unmatched at.