Bushi is known as Kibushi on Mayotte and is spoken by 40% of the islands' people (1980). It is spoken alongside the Maore dialect (Shimaore) of Comorian, a Bantu language. Historically, Kibushi and Shimaore have been spoken in certain villages but Shimaore tends to be the de facto indigenous lingua franca in everyday life, because of the larger Shimaore-speaking population. Only Shimaore is represented on the local television news program by Réseau Outre-Mer 1re. Dialects of Bushi in Mayotte (known as Shibushi in Shimaore) include Kiantalaotse and Kibushi-Kimaore (Shibushi-Shimaore in Shimaore).
In Mayotte, Bushi was traditionally written with an informal French-based Latin orthography. On 22 February 2006, the Conseil de la Culture, de l'Education et de l'Environnement de Mayotte introduced an official alphabet that utilizes the basic Latin alphabet without c, j, q, and x and adds three letters: ɓ, ɗ, and n̈.