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

You’ve probably already noticed it: a tiny silver fish attached to a car trunk, catching the light at red lights and drawing your attention during your journey. Why do some drivers proudly display it? Is it simply decoration or a subtle message? This seemingly innocuous symbol actually has a surprising story… but not necessarily the one you might expect at first glance…

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