what do you call a fish with no eyes
  • Matthew Daniel
  • May 1, 2023

What Do You Call a Fish With No Eyes?

Have you ever heard the riddle, What do you call a fish with no eyes?” The answer is “fsh,” which is missing the “i” for “eye.” But did you know that there is actually a species of fish without eyes in real life?

Blind fish find food thanks to their twisted heads

The fish in question is called the Mexican blind cavefish or Astyanax mexicanus. As the name suggests, this fish is found in caves in Mexico and has evolved to live without eyes due to the lack of light in its environment.

But how does the fish survive without sight? The Mexican blind cavefish has developed other senses to navigate and find prey in its dark habitat. It has heightened senses of taste and smell, as well as a lateral line system that can detect vibrations in the water.

Interestingly, the Mexican blind cavefish isn’t the only fish species without eyes. There are other fish, such as certain species of catfish and some deep-sea fish, that have also lost their eyes due to the lack of light in their environments.


The name of a fish with no eyes is the Mexican blind cavefish. While it may seem like a disadvantage to not have eyes, these fish have adapted to their environment and developed other senses to thrive. It’s fascinating to see how different species can evolve and adapt to their surroundings in unique ways.


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