These transparent fish turn rainbow with white light. Now, we know why Repeated structures in the ghost catfish’s muscles separate white light that passes through their bodies into different wavelengths.

“The collective diffraction of light produces an array of colors. When the fish contracts and relaxes its muscles to swim, the sarcomeres slightly change in length, causing a shifting rainbow effect.”

#scicomm
#animalcoloration
#iridescence
#fish

www.sciencenews.org/article/tran...
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