pritya matsya-vapur-dharam
tam-unto the fish; atmanah-personal; anugraha-artham-to show favor; pritya-very much pleased; matsya-vapuh-dharam-the Supreme Personality of Godhead, who had assumed the form of a fish; ajanan-without knowledge of this; raksana-arthaya-just to give protection; sapharyah-of the fish; sah-the King; manah-mind; dadhe-decided.