We have all seen a peacock show its extravagant, colorful tail feathers in courtship of a peahen. Now, a group of researchers has used a special camera to discover that female northern swordtail fish choose their mates based on a similar display.
We have all seen a peacock show its extravagant, colorful tail feathers in courtship of a peahen. Now, a group of researchers has used a special camera to discover that female northern swordtail fish choose their mates based on a similar display.