Matsya Jayanti, also known as Matsya Avatar Jayanti, is a Hindu festival that commemorates the appearance of Lord Vishnu in his Matsya (fish) incarnation. According to Hindu mythology, Matsya Avatar is the first of the ten incarnations (avatars) of Lord Vishnu. Matsya Jayanti is observed on the day of Chaitra Purnima, which falls in the Hindu lunar month of Chaitra, usually in March or April.
During Matsya Avatar, Lord Vishnu is believed to have appeared as a giant fish to save the sage Manu and the seven sages (Saptarishi) from a great flood that engulfed the world. Lord Vishnu guided a boat carrying Manu and the sages, rescuing them from the deluge. This event symbolizes the protection of life and the preservation of righteousness.
On Matsya Jayanti, devotees observe rituals and prayers dedicated to Lord Vishnu, seeking his blessings for protection, prosperity, and spiritual well-being. They may visit Vishnu temples, perform puja (worship), recite prayers, and listen to religious discourses that recount the story of Matsya Avatar. The festival holds significance for followers of Hinduism, particularly those who worship Lord Vishnu as the preserver of the universe.