The Daasanach (also known as the Marille or Geleba) are an ethnic group inhabiting parts of Ethiopia, Kenya, and South Sudan.

As a result, large numbers of them have moved to areas closer to the Omo River, where they attempt to grow enough crops to survive.

There is much disease along the river (including tsetse, which has increased with forest and woodland development there), however, making this solution to their economic plight difficult.

There, the early Daasanach Nilotes would have come into contact with a Cushitic-speaking population, and eventually adopted this group's Afro-Asiatic language.

[3] The Daasanach are a primarily agropastoral people; they grow sorghum, maize, pumpkins and beans when the Omo river and its delta floods.

Otherwise the Daasanach rely on their goats and cattle which give them milk, and are slaughtered in the dry season for meat and hides.

There are a number of variant spellings of Daasanach, including Dasenach and Dassanech (the latter used in an episode about them in the TV series Tribe).