600 (2000 SIL). Ethnic population: 680 (Moore 2006).
Pará and Amazonas states: upper Nhamunda river to Mapuera and Jatapu rivers.
Reportedly similar to Waiwai [waw]. No dialectal variation. Some Hixkaryana who live among the Waiwai are called Sherewyana.
Latin script [Latn].
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.