What created a GloFish?

GloFish are genetically modified zebrafish. They were created by scientists at the National University of Singapore in the late 1990s.

Here's the breakdown:

* Original Purpose: The scientists were initially working on developing zebrafish that could be used to detect environmental toxins.

* Genetic Modification: They inserted a gene from a jellyfish into the zebrafish embryo. This gene codes for a fluorescent protein that makes the fish glow under UV light.

* Commercialization: The technology was licensed to a company called Yorktown Technologies, who began selling GloFish as pets.

Key Points:

* Not Naturally Occurring: GloFish are not a naturally occurring species. They are the result of human intervention through genetic engineering.

* Ethical Concerns: There are ethical concerns surrounding the creation and sale of GloFish, including the potential for unintended consequences on the environment.

Note: While the original GloFish were fluorescent green, there are now various colors available due to further genetic modifications.