Idaaca, Idaasa, Idaasha, Ìdàáshà, Idaatcha, Idaca, Idáìtsà
100,000 (2002 SIL).
Collines department: Dassa-Zoume and Glazoué communes. West Ouémé river.
Literacy rate in L1: 20%. Literacy rate in L2: 20%. Literacy program covers entire language area due to high motivation. Taught in primary schools in small-scale multilingual education program since 2014. Poetry. Radio programs. Bible portions.
Latin script [Latn].
Christian, Muslim, traditional religion.