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Two organs, one brain area: How fish orient themselves in the water

Summary by Phys.org
Using zebrafish, researchers from Osaka Metropolitan University (OMU) have identified the tegmentum region in the fish midbrain as the area where light input from both the fish's eyes and the pineal organ—the "third eye"—is integrated. Their findings, published in the journal Proceedings of the National Academy of Sciences, suggest that fish use the integrated light signals in this region to swim up or down in response to differences in the wave…

2 Articles

Zebrafish do not see the world with their eyes alone. Something special actually happens in their brains that we are only just beginning to understand. Okay, just to be clear: fish do not have a literal third eye in the middle of their heads. But they do have an organ on top of their brains that can perceive light. Actually, we have that […] More science? Read the latest articles on Scientias.nl.

·Middelharnis, Netherlands (Kingdom of the)
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Phys.org broke the news in United Kingdom on Monday, March 30, 2026.
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