How do Mexican cavefish escape predators?

The ability to detect threatening stimuli and initiate an escape response is critical for survival and under stringent evolutionary pressure. To detect predators, fish use a number of sensory systems including olfaction (smell) ...

Gene found that causes eyes to wither in cavefish

Mexican cavefish spend their entire lives in the dark. With no need for vision, many of them lost functional eyes. In more than 30 varieties of Mexican cavefish, the eyes stop developing as embryos grow into larvae. Although ...

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, ...

page 1 from 2