The eighth saying in the Gospel of Thomas is a big fish story. Jesus said, "The man is like a wise fisherman who cast his net into the sea and drew it up from the sea full of little fish. Among them the wise fisherman discovered a fine large fish. He threw all the little fish back into the sea, and easily chose the large fish. Anyone here with two good ears had better listen!" 

View Marshall's books here:

https://www.amazon.com/stores/Marshall-Davis/author/B001K8Y0RU