Kiantalaotsy is a northern dialect of Malagasy in Mayotte. It's a dialect of Bushi.
Kiantalaotsy belongs to the Austronesian language family. It is part of Northern Malagasic subgroup along with Tsimihety, Northern Sakalava, Northern Betsimisaraka and Antakarana.
Kiantalaotsy is only spoken especially in Poroani and Ouangani.
The differences between those to dialects of Bushi are Small.