In the Milky Way, the Salarian Union is dominated by the rare salarian females known as "Dalatrasses," who negotiate the complex web of salarian politics on behalf of the regions they govern. Salarians belong to vast clans, whose interrelation and current political status must be painstakingly tracked. Clans are divided into concentric circles of relatives: those closest are in the first circle, which may be up to 100 members, and circles increase exponentially outward. This is considered confusing by other organic species, though it is mathematically straightforward.
Salarians do not have a concept of romantic love. The fertilization of eggs is a political act, since the lineage of any resulting females has a strong impact on society, and only occurs after months or even years of negotiations.
Multiple salarian females opted to join the Andromeda Initiative as civilians. Renegotiation of a dozen political dynasties in the Salarian Union was ongoing when we departed.