Yei
The Yei are a Marind sub-tribe of the lowlands along the upper Maro River near the Papua New Guinea border, in South Papua. Originating in the Fly River country, they speak a Yam, or Morehead–Maro, language closer to Papua New Guinean tongues than to Marind, and live by fishing, hunting and sago gathering in Upper and Lower Yei villages.