Listen to 12345 Once I Caught a Fish Alive online. 12345 Once I Caught a Fish Alive is an English language song and is sung by The Sunshine Singers. 12345 Once I Caught a Fish Alive, from the album Sing Along Songs in the Car - The Best Ever Childrens Nursery Rhymes, was released in the year 2015. The duration of the song is 1:32. Download English songs online from JioSaavn.