Originally Posted by Rick

The fish is called an icthus, and is a symbol of Christianity, the national religion of Britain. It stems from when Jesus was alive, or not long after. It was a secret symbol drawn in caves, building etc. At the time, Christians were persecuted, and the icthus was used to show that other christians were around, and it was a safe place etc.

I know this as it was my secondary schools symbol lol.

Rick.