Bhagavatapurana 5.18.24

5.18.24

ramyake ca bhagavataḥ priyatamaṃ mātsyam avatāra-rūpaṃ tad-varṣa-puruṣasya manoḥ prāk-pradarśitaṃ sa idānīm api mahatā bhakti-yogenārādhayatīdaṃ codāharati //

24. In the continent of Ramyaka, Manu the king of that continent even now worships in intense uninterrupted devotion the glorious and beloved Lord in the form of Matsya which was formerly revealed to him and he gives expression to his devotion thus:—