As many of you know, flounders look very different from a typical fish.
Traditionally, most fish are symmetrical, but the eyes of flounders and soles are positioned to one side, and they swim not by flipping their fins left and right, but up and down.
Even more intriguing is that these fish are symmetrical right after hatching, but within three weeks, one eye starts to move to the opposite side, and in about a month, their faces become completely distorted.
Even Charles Darwin, the founder of evolutionary theory, was perplexed by the peculiar developmental process and appearance of flounders, raising doubts about their evolutionary path.
How on earth did the flounder's face end up like this?
#Flounder, #Evolution, #DramaticEvolution, #TheBlindWatchmaker, #Sole, #Ray, #RichardDawkins
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[References]
Matt Friedman, (2008). "The evolutionary origin of flatfish asymmetry."
- Jeff Hecht, (2008). "Flatfish caught evolving, thanks to its roving eye."
- Alexander M. Schreiber, (2013). "Flatfish: An Asymmetric Perspective on Metamorphosis."
- Jubin Xing et al., (2020). "Eye location, cranial asymmetry, and swimming behavior of different variants of Solea senegalensis."
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(1)Out law soft the old west by Evert Z
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(3)Counting the money by Ian Post
17 мар 2024
