Dashavatara refers to the ten primary avatars of Lord Vishnu, the Hindu god of preservation

Dashavatara refers to the ten primary avatars of Lord Vishnu, the Hindu god of preservation. Shri Vishnu is said to descend in form of an avatar to restore cosmic order. The word Dashavatara derives from dasa, meaning 'ten', and avatar (avatara), equivalent to 'incarnation'.

The list of avatars in the Dashavatara varies by region. Lord Vishnu incarnates on Earth from time to time to eradicate evil forces, to restore the dharma and to liberate the worthy ones or devotees from the cycle of births and deaths. Shri Vishnu in his avatar as Krishna speaks in the Bhagavad Gita, "To deliver the pious and to annihilate the miscreants, as well as to reestablish the principles of righteousness, I manifest myself, millennium after millennium".
The ten Avatars of Shri Vishnu are ; He has appeared in various incarnations nine times on this earth, with the tenth predicted.

Matsya (fish)
Kurma (turtle)
Varaha (pig/boar)
Narasimha (half lion, half man)
Vamana (dwarf sage with the ability to grow)
Parasurama (fierce man/hunter)
Rama (greatest warrior/ideal man)
Krishna (spiritually realised man)
Buddha (the all knowing one)
Kalki ; Expected towards the end of this present age of decline, as a person on earth, seated on a white horse.

The Bhagavata Purana claims that Shri Vishnu has infinite avatars which he takes whenever there is a need to restore cosmic order, however, it still goes on to numerically list out 22 Vishnu avatars in chapter 1.3.

Four Kumaras (Catursana), Varaha . Narada. Nara-Narayana. Kapila. Dattatreya. Yajna. Rishabha. Prithu . Matsya. Kurma. Dhanvantari. Mohini. Narasimha. Vamana. Parashurama. Rama. Vyasa. Balarama. Krishna. Buddha. Kalki.

Om Namo Narayana Jai Shri Vishnu ✨🐚🌀🕉🙏