Addendum to AntoniaTiger's history. The fish symbol was used by the early Christians who were being persecuted and martyred. The 5 letters in the word for fish were the first letters in the words "Jesus Christ God's Son Savior" - the basic premise of Christianity. Obviously the persecuted Christians needed some means of identifying one another that was discreet (heaven or not, being fed to lions isn't an attractive pastime) so when they met they'd draw a picture of a fish in the sand to identify themselves to each other - kind of like a secret password. I don't have formal documentation on this but it is what I was taught by inside sources. I suspect the Darwin Fish symbol is basically an act of defiance/mockery against Christians for their beliefs.

Before they made me they broke the mold!
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