Science

Oceanic Fish Transitioned to Freshwater Multiple Times, Paleontologists Say

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Oct 6, 2025 - 14:00
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Oceanic Fish Transitioned to Freshwater Multiple Times, Paleontologists Say
An artist’s reconstruction of the Weberian apparatus in Acronichthys maccognoi; the Weberian structure (gold-colored bones at center) arose from a rib (shown in gray attached to several back bones in the spine) and connect the fish’s air bladder (left) with the inner ear (right). Image credit: Ken Naganawa, University of California, Berkeley.

The fish supergroup Otophysi, known for their enhanced hearing, comprises two-thirds of living freshwater fish species.

The post Oceanic Fish Transitioned to Freshwater Multiple Times, Paleontologists Say appeared first on Sci.News: Breaking Science News.

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