Nai or Biaka is a language of Papua New Guinea

Papua New Guinea

Papua New Guinea , officially the Independent State of Papua New Guinea, is a country in Oceania, occupying the eastern half of the island of New Guinea and numerous offshore islands...

. It is spoken in Amanab District, Sandaun Province, in three villages: Konabasi, Biaka, and Amini.

Due to an alignment error in the published data, Nai (as Biaka) was mistakenly placed in a spurious family with the Fas language

Fas languages

The Fas languages are a small language family of Papua New Guinea. They are generally classified as part of a larger as-yet unproven Kwomtari–Fas family.-Classification:...

 Baibai

Baibai language

Baibai is one of two Fas languages of Papua New Guinea. It is the eponymous language of the spurious Baibai languages, which was posited when the Fas language was mistakenly swapped for the Kwomtari language Biaka in published data. It actually has little in common with Kwomtari, but is 40% cognate...

; this was then linked back to the Kwomtari family as "Kwomtari–Baibai". (See Kwomtari–Fas languages for details.)