What does the small fish-shaped symbol seen on the back of some cars mean, and why is it used?

The small fish-shaped symbol you sometimes see on the back of a car is usually the Ichthys, an ancient Christian symbol.

🐟 What does it mean?

The fish symbol is associated with Christianity. “Ichthys” comes from the ancient Greek word for fish (ἰχθύς) and became a meaningful Christian symbol.

The letters of the Greek word were also interpreted as an acronym for:

Iēsous Christos, Theou Yios, Sōtēr
“Jesus Christ, Son of God, Savior.”

Why put it on a car?

For many Christians, displaying the fish is simply a quiet way of expressing their faith or identifying themselves as Christian. It can also serve as a reminder of their religious beliefs.

You’ll sometimes see variations, including fish containing the word “Jesus”, a cross, or other Christian imagery.

One interesting historical detail

The fish became especially associated with early Christians, and tradition holds that it could serve as a discreet symbol of Christian identity during periods when openly practicing Christianity was dangerous. The exact extent of that historical use is debated, however.

So if you see a simple fish emblem on someone’s vehicle, the most common meaning is Christian faith—not a statement about the vehicle itself.