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For the first time, researchers have captured footage of a complete zebrafish brain while the animal was actively seeing.
Researchers stitch together more than 26,000 electron microscopy images to create a view of a zebrafish embryo that is 281 gigapixels with a resolution of 16 million pixels per inch.
Scientists find that fish are scared of robot predators, but not when they're totally hammered.
Cancer researchers can see through the body of new breed of zebrafish to view the internal organs.