Are there fish with rocks behind their eyes?

Answers:
No, rocks don't just miraculously grow behind fishes' eyes. You may be thinking of barnacles, but they only grow on slow moving creatures like some whales (but whales are mammals, not fish).
Nosoop4u

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I'm not sure I understand. Could you specify? No fish don't have rocks in their heads or behind their eyes. Where did you hear this?