3,500 in Brazil (2006 ISA). Population total all countries: 3,900.
Acre, on Juruá and Purus rivers. Also in Peru (Culina).
Minor changes from Peruvian dialect.
Still spoken as L1 in remote villages, but Portuguese [por] is becoming dominant in villages near cities (2007).
May still be some uncontacted groups in the Brazil-Peru border area.