One of the eighteen पुराणस् . This पुराण was told to मनु सत्यव्रत by महाविष्णु during his incarnation as मत्स्यु . There are thirteen thousand श्लोकस् in it. For prosperity this पुराण should be given as gift on the विषुवत् day along with a golden image of मत्स्य . (Chapters 2 and 272, Agni Purāṇa) .