These twenty-five Personalities of Godhead are known as lila-avataras. Because they appear in each day of Brahma, or in each kalpa (millennium), they are sometimes known as kalpa-avataras. Of these incarnations, Hamsa and Mohini are not very permanent or well known, but They are listed among the prabhava-avataras. Kapila, Dattatreya, Rsabha, Dhanvantari and Vyasa are eternally situated and very widely known. They are also counted among the prabhava incarnations. Kurma, Matsya, Narayana, Varaha, Hayagriva, Prsnigarbha, and Baladeva, the killer of Pralambasura, are counted among the vaibhava-avataras.