March 22, 2016 | Elly, Exhibitions Developer, Science Museum

I've kept fish as pets, but I've never seen one as colourful as this. Scientists have genetically altered a zebrafish so that its skin fluoresces in thousands of colours.

Each cell in the 'rainbow' zebrafish's outer skin shines a different combination of colours. This lets the scientists study how skin heals after a wound. They do this by watching the colours change during healing.

The researchers found three separate processes that protect a wound. I think it's exciting to see something so beautiful also contributing to scientific discovery.


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The fluorescent cells cover the whole surface of the fish - even the corneas of its eyes.


Image: Flickr/tohru.murakami

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