Story perspectives

Student Discovers Rockhead Poacher Fish's Unique Sound Mechanism

1/11/2026

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Summary

Story summary

Daniel Geldof, then an undergraduate, proposed that the rockhead poacher fish uses its head cavity to produce sound.
Kory Evans recalls observing a rockhead poacher fish with a hole in its head about a decade ago.
Last year, Geldof presented his master’s thesis at Louisiana State University, showing the fish makes noise by striking its ribs against the head cavity.
Kassandra Ford praised Geldof's innovative methods in uncovering the fish's unique behaviors.

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Story summary

Daniel Geldof, then an undergraduate, proposed that the rockhead poacher fish uses its head cavity to produce sound.
Kory Evans recalls observing a rockhead poacher fish with a hole in its head about a decade ago.
Last year, Geldof presented his master’s thesis at Louisiana State University, showing the fish makes noise by striking its ribs against the head cavity.
Kassandra Ford praised Geldof's innovative methods in uncovering the fish's unique behaviors.