How the cavefish lost its eyes — again and again

Mexican tetras that got swept into pitch-black caverns had no use for the energetically costly organs. They lost their eyes in multiple ways — and gained some nifty traits too.

  Science/Technology   Aug 17, 2025   0   34  Add to Reading List
How the cavefish lost its eyes — again and again
Why the Hen Does Not Have Teeth Story Book

WHY THE HEN DOES NOT HAVE TEETH STORY BOOK

It’s an amazing story, composed out of imagination and rich with lessons. You’ll learn how to be morally upright, avoid immoral things, and understand how words can make or destroy peace and harmony.

Click the image to get your copy!

Why the Hen Does Not Have Teeth Story Book

WHY THE HEN DOES NOT HAVE TEETH STORY BOOK

It’s an amazing story, composed out of imagination and rich with lessons. You’ll learn how to be morally upright, avoid immoral things, and understand how words can make or destroy peace and harmony.

Click the image to get your copy!

Why the Hen Does Not Have Teeth Story Book

WHY THE HEN DOES NOT HAVE TEETH STORY BOOK

It’s an amazing story, composed out of imagination and rich with lessons. You’ll learn how to be morally upright, avoid immoral things, and understand how words can make or destroy peace and harmony.

Click the image to get your copy!

Mexican tetras that got swept into pitch-black caverns had no use for the energetically costly organs. They lost their eyes in multiple ways — and gained some nifty traits too.

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