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 ...

Surprise discovery of Europe's first cave fish

Researchers reporting in Current Biology on April 3 have discovered the first European cave fish. A hobby cave diver first sighted the fish, a loach in the genus Barbatula, living in a hard-to-reach, underground water system ...

Darkness stifles reproduction of surface-dwelling fish

There's a reason to be afraid of the dark. Fish accustomed to living near the light of the water's surface become proverbial "fish out of water" when they move to dark environments like those found in caves, according to ...

Through evolution, cavefish have lost sleep

Cave fish sleep significantly less than their surface counterparts, a finding by New York University biologists that reveals the genes involved in sleep patterns and disorders. Their study, which appears in the journal Current ...

Scientists find eyeless cave fish in Indonesia

Eyeless cave fish and a frog that carries its offspring on its back are among the new species a team of scientists have discovered in Indonesia's eastern Papua region.

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