Icthyomancy is a form of divination that studies or reads the entrails of fishes. This was an important method of divination practiced by many ancient nations in Near East. Early Christians used Icthys, Greek for fish, as a symbol for Christ. A.G.H.
Riland, George, The New Steinerbooks Dictionary of Paranormal, New York, Warner Books, Inc., 1980, p. 136