The Greek spelling for the word fish is "ICHTHUS" (pronounced ikh-thoos) and was incorporated into the meaning of the fish symbol. ICHTHUS is an acronym coming from the first letters of the Greek phrase "Iesous, Christos, Theou, Uios, Soter" which spell out a secret message about our Lord. For more on the ICHTHUS refer to Christian Journey Today Christians still use the fish as a symbol of their Christianity and to help spread the message of Jesus Christ.