In addition to Varaha, Kurma, and Vamana, they include the fishy Matsya and the leonine Narasinha.  
They included a boar who brought the earth back from the bottom of the ocean after winning a 1,000-year-long battle against the demon Hiranyaksha. Another was a turtle who himself lived on the bottom of the ocean, supporting Mount Mandara. Yet another was a dwarf who tricked Bali into assuming responsibility for the underworld.  In addition to Varaha, Kurma, and Vamana, they include the fishy Matsya and the leonine Narasinha.  FTP, name this group of mythical figures which also includes Kalki and Rama, the ten terrestrial incarnations of a Hindu deity.
They included a boar who brought the earth back from the bottom of the ocean after winning a 1,000-year-long battle against the demon Hiranyaksha.
the avatars of Vishnu