Color-Changing Fish Can ‘See’ Using Its Skin 
By Jonathan Lambert US Source: themessenger 8/22/2023
Jonathan Lambert
Credit: Humberto Ramirez
It all started with a dead fish.

Marine biologist Lorian Schweikert reeled in the hogfish while on a fishing trip in the Florida Keys during graduate school — she plopped it down on the deck, and kept fishing. But when she went to grab the dead fish later, she did a double take — the fish’s skin that touched the boat had taken on the same white hue and texture of the deck.
 

“I was amazed that this color change was happening post mortem,” she said. “It gave me this idea that maybe the skin was seeing its surroundings.”

Temperature and deck pressure likely had more to do with that particular color change, she said, but the encounter spurred new research that suggests Schweikert was half right: hogfish can “see” using their skin, so to speak, but they likely can’t perceive their surroundings.

Instead, they may just see their own skin.

 
Hogfish Continue...

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