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How do flatfish get so wonky?
Baby flatfish are born with eyes on opposite sides of the head, like other fish
But after 3 weeks, one eye migrates to the other side
The skin turns sandy on the eyes's side, and stays pale on the other
Then it tips sideways and swims flat
A new study found light- sensitive proteins called opsins in the flounder's skin
Opsins are normally found in the eye
But in flounder, they activate hormones that control skin colour and body shape
In the larval stage, the fish swims with a tilt
The strange configuration helps it hide from predators and ambush prey