Coloured 3D micro-computed tomography (micro-CT) scan of the head of a zebrafish (Danio rerio), showing the gills (green), eye (right) containing the lens (pink) and the brain (yellow). This tropical freshwater fish is native to the Himalayas. It is a popular model organism in biological research.

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Photo credit: © K H FUNG/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

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