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Why This Fish Actually Needs a Hole in the Head

10 January 2026 at 05:02
A cavity in the middle of the rockhead poacher’s skull might be used like a maraca to produce sound, new research suggests.

Β© Daniel Geldof, LSU Advanced Microscopy and Analytics Core

To solve the mystery, Mr. Geldof used a micro-CT scanner to scan the fish’s anatomy.
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