When fish suddenly change color, there are little photoreceptors embedded deep within their skin keeping watch to ensure the color is just right, according to new research.
For the first time, scientists have examined the structure of the system that not only allows animals to rapidly change color but also to do so with enough accuracy to survive. The research team, which includes Florida International University marine scientist Heather Bracken-Grissom and is led by Lori Schweikert of the University of North Carolina Wilmington, examined hogfish for the study published this week in.
The scientists liken this function to a person looking in a mirror to determine whether their outfit makes sense for the day. Only for people, an outfit choice is rarely a life and death matter. For a hogfish, selecting the wrong color could make them easier for predators to find.
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