The Mexican cave fish (code name: Astyanax mexicanus) isn't just blind and eyeless, it also has a shrunken brain. Exactly how it ended up that way is a bit of an ...

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 ...

Astyanax mexicanus cave fish have adapted to an incredibly tough environment: chilly, pitch-dark caves that flood about once a year, providing brief feasts separated by long periods of starvation.

We’ve found out why a Mexican cavefish has no eyes – and the surprising answer is likely to be seized upon by those who think the standard view of evolution needs revising. It was assumed that these ...

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, ...

The Fish and Wildlife Service says it needs more time to examine the science while considering protections for two species of small fish that live in an aquifer. Two species of blind cave-dwelling ...

Blind cave fish have regional accents In the underground caves of north-eastern Mexico, groups of blind fish that communicate using clicks seem to be developing cave-specific accents. Researchers ...

Indiana has a rich biodiversity with thousands of species in unique habitats, but growth and development have changed some of those fragile ecosystems and threaten the wildlife they support. IndyStar ...

The fish occur naturally in several forms adapted to living in caves; all are descendants of a surface-dwelling ancestor and vary from partially to completely blind. The cave-adapted fish also show a ...