Uploaded August 2017 | Updated September 2026, 30 minutes ago
Shimmering schools of fish have dazzled scientists for centuries with their synchronized maneuvers. Now, high-speed video is revealing how—and why—they do it.
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Originally published on bioGraphic: bit.ly/2ftce5K
Produced by Spine Films
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Collective behavior is embodied in swarms of insects, flocks of birds, herds of antelope, and schools of fish. In each of these cases, individuals move through their environment and respond to threats and opportunities almost simultaneously, forming an undulating enclave that seems to operate as a single entity. Such coordinated movement requires the rapid and efficient transfer of information among individuals, but understanding exactly how this information spreads through the group has long eluded scientists. Studying this behavior in schools of fish has been incredibly challenging, because the cues that drive it occur at lightening speed, come from multiple directions and sources, and of course because all of it takes place underwater. Now, Iain Couzin and his colleagues at the Max Planck Institute for Ornithology at the University of Konstanz, Germany are using new observation techniques and technologies—including high-speed video, motion-tracking software, and advanced statistical modeling—to reveal the mysterious mechanics of schooling fish. Their findings may shed light on the evolution and benefits of collective behavior across the animal kingdom.
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Shimmering schools of fish have dazzled scientists for centuries with their synchronized maneuvers. Now, high-speed video is revealing how—and why—they do it.
___
Originally published on bioGraphic: bit.ly/2ftce5K
Produced by Spine Films
____
Collective behavior is embodied in swarms of insects, flocks of birds, herds of antelope, and schools of fish. In each of these cases, individuals move through their environment and respond to threats and opportunities almost simultaneously, forming an undulating enclave that seems to operate as a single entity. Such coordinated movement requires the rapid and efficient transfer of information among individuals, but understanding exactly how this information spreads through the group has long eluded scientists. Studying this behavior in schools of fish has been incredibly challenging, because the cues that drive it occur at lightening speed, come from multiple directions and sources, and of course because all of it takes place underwater. Now, Iain Couzin and his colleagues at the Max Planck Institute for Ornithology at the University of Konstanz, Germany are using new observation techniques and technologies—including high-speed video, motion-tracking software, and advanced statistical modeling—to reveal the mysterious mechanics of schooling fish. Their findings may shed light on the evolution and benefits of collective behavior across the animal kingdom.
_______
Discover more beautiful and surprising stories about nature and sustainability at biographic.com
* Facebook: biographic.magazine
* Instagram: @biographic_magazine
* Twitter: @bioGraphic










![A Model Toadlet | bioGraphic
Chytrid fungus (Batrachochytrium dendrobatidis [Bd]) and the disease it causes has wiped out countless populations of frogs throughout the world. While its exact origins aren’t known, recent estimates suggest that chytrid disease has contributed to the decline of more than 500 amphibian species and led to as many as 90 extinctions globally. This devastation has wreaked havoc on entire ecosystems and left scientists and conservationists baffled and uncertain as the species and environments they’ve worked so hard to understand and protect have simply winked out.
While the disease is by no means under control, especially in Central and South America, some frogs appear to be at least somewhat resistant to it. And now researchers in Brazil and their collaborators at the California Academy of Sciences are studying some of these populations and conducting an ambitious field experiment designed to better understand factors that influence how chytrid fungus spreads and the severity of disease it causes.
Their research focus in this, the largest tract of Atlantic Forest in South America, less than 60 kilometers from Brazil’s largest city, is one of the region’s tiniest amphibian species and one of its most abundant: the pumpkin toadlet (Brachycephalus pitanga). The hope is that what they learn from studying this diminutive species will ultimately help them and other scientists and conservationists around the world predict and possibly prevent major chytrid outbreaks in the future.
Discover more beautiful and surprising stories about nature and sustainability at www.biographic.com
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