One of the fish’s advantages is clear—literally. Because embryos are transparent and develop outside the mother’s body, scientists can manipulate genes to model human diseases and directly ...

Now, more than 100 labs around the world are using these transparent fish to study cancer pathology and development in real time. “The field of in vivo imaging—looking at things that are ...

Larval zebrafish are an invaluable tool for neuroscientists, who use the tiny, transparent fish to probe how the brain ...