600 (2000 SIL). Ethnic population: 680 (Moore 2006).
Amazonas, upper Nhamunda river to Mapuera and Jatapú rivers.
Similar to Waiwai [waw]. No dialectal variation. Some Hixkaryana who live among the Waiwai are called Sherewyana.
In 1959 the population was about 100, with few children, high infant mortality, low will to live. By 1977 it was 237. Through modern medicine, intermarrying with the Waiwai [waw], self-confidence through literature in Hixkaryana, Hixkaryana teachers running a school for children ages 5 to 14, and government help in setting up a Brazil nut industry, they continue to grow.