“Why does this bizarre fish have a hole in its head?”

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Accessed on 13 January 2026, 0210 UTC.

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Russ Roberts (https://hawaiisciencejournal.com).

Three-dimensional reconstructions of the rockhead poacher’s insides hint that the fish may beat its cranial pit like a drum (Louisiana State University)

This Bizarre Fish Has a Hole in Its Head. The Creature Might Use It Like a Drum to Rock Out

The rockhead, or deep-pitted, poacher may use its ribs to beat the inside of its head cavity to communicate with other creatures, according to a new study

Sara Hashemi

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