A Mexican cavefish with a scarred heart

Scientists are studying a guppy-sized, blind, translucent fish that lives in the cave systems of northern Mexico to figure out why some animals can regenerate their hearts, while others just scar. Their research appears November ...

Clues from a Somalian cavefish about modern mammals' dark past

After millions of years living in constant darkness, a species of blind cavefish found only in Somalia has lost an ancient system of DNA repair. That DNA repair system, found in organisms including bacteria, fungi, plants, ...

Tiny cavefish may help humans evolve to require very little sleep

We all do it; we all need it—humans and animals alike. Sleep is an essential behavior shared by nearly all animals and disruption of this process is associated with an array of physiological and behavioral deficits. Although ...

Researchers make a major cavefish discovery in Thailand

Researchers from New Jersey Institute of Technology (NJIT) have identified unique anatomical features in a species of blind, walking cavefish in Thailand that enable the fish to walk and climb waterfalls in a manner comparable ...

Large eyes come at a high cost

Researchers from Lund University in Sweden have shown that well-developed eyes come at a surprising cost to other organ systems. The study involving Mexican cavefish shows that the visual system can require between 5% and ...

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