L1 users: 16,200 (2003 SIL).
East Sepik province: west Yangoru district, Torricelli mountains; Sandaun province: Attape Lumi district.
Coastal Arapesh, Bukiyip (Mountain Arapesh). Lexical similarity: 60% with Mufian [aoj].
SVO; 14 noun classes; noun phrase concordance.
Shifting to Tok Pisin [tpi]. Many children and adults unwilling to speak the language.
Latin script [Latn].