These are some of the examples of the Darwin fish emblem;
The emblem is a take off on this emblem that originated with the early Christian church (not sure how early the earliest carvings were made);
Since most of the Apostles were fishermen, and Jesus said to Peter, "Follow me and I will make you Fishers of men", Christianity came to use the symbol to denote a Christian.
It also denoted Christ's feeding of the multitudes from just a few loaves and a couple of small fishes.
Romans used to draw the Jesus fish in the dirt with a stick or a finger as a way to tip off fellow Christians that they weren't alone.
Am I offended? Naaaah, no big deal. I have a very big God.

He can deal with those who insult Him without my help.
Besides, Some Christians have upped the ante on this emblematic battle, so to speak;
