Scientists have discovered the world’s largest known subterranean fish in a cave in northeastern India. The “troglomorphic fish” was discovered last year, according to recently released research. “The ...

A blind cave fish that has spent millions of years underground isolated from evidence of day and night still has a working biological clock, albeit an unusually distorted one, scientists find. This ...

Scientists found an aquatic creature with skin instead of eyes in a cave of Indonesia and discovered a new species, a study said. Photo from Wibowo, Willyanto, Dharmayanthi, Rahmadi and Lumbantobing ...

Living in perpetual darkness deep beneath the ground, cave fish are odd little creatures. With reduced eyes and pale coloration, they were thought to found on every continent except Antarctica and ...

When you buy through links on our articles, Future and its syndication partners may earn a commission. The previously unknown Xingren golden-line fish appears to be still evolving for cave life. . | ...

Every group of Mexican tetra fish speaks with a different accent. Scientists studied both the blind cave-dwelling populations and those that live in rivers. They all communicate using a series of ...

In eastern Mexico’s underground caverns and streams, a blind fish undergoes a peculiar adolescence: as it approaches maturity, taste buds begin to sprout under its chin and on top of its head, ...

After lowering themselves into a “vertical cave” in Indonesia, a team of cavers paused at a shallow pool. Floating inside was an odd-looking creature with skin where its eyes should be. They didn’t ...