16,200 (2003 SIL).
East Sepik Province, west Yangoru district, Torricelli mountains; some in Sandaun Province, Attape Lumi district.
Bukiyip (Mountain Arapesh), Coastal 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].