PacSci-Doku: "Glow Fish" Answer

By Dennis Schatz - Senior Vice President for Strategic Programs

The question in this edition is:

What is the first genetically modified pet?

The answer: Zebrafish

Scroll down to see the solution.

Zebrafish are the first pets to be genetically modified so that they glow (fluoresce) when you shine an ultraviolet light on them. Called Glofish, you can buy them in six fluorescent colors, including green, red and yellow. The fluorescent colors come from inserting genetic material from animals that are naturally fluorescent in the wild (e.g. jelly fish, corals and sea anemones) into the genes of the zebrafish. In

" title="Video Link" target="_blank">this YouTube video you can see the modified zebrafish under an ultraviolet light.

No one worries about these fish getting loose in U.S. waterways because zebrafish come from tropical climates and cannot survive in the temperate U.S. But recent genetic modifications of the black tetra (a close relation of the zebrafish) to make them glow is more concerning. They may be able to survive in the warmer waters of the southeastern U.S. Learn More

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