How this little see-through fish gets its rainbow shimmer

This image provided by Qibin Zhao shows ghost catfish showing iridescence. The ghost catfish has a see-through body that flickers with rainbow colors when the light hits it. Now, scientists have cracked the case of how the fish creates its iridescent glow. (Qibin Zhao via AP)

This image provided by Qibin Zhao shows ghost catfish showing iridescence. The ghost catfish has a see-through body that flickers with rainbow colors when the light hits it. Now, scientists have cracked the case of how the fish creates its iridescent glow. (Qibin Zhao via AP)

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