Genetic engineered pets or animal in general

What is your opinion on genetic engineered pets? Or animal in general?

A company had added some jellyfish "extraction" into Zebrafish or Zebra Danio.

Picture of ordinary Zebra Danio


After the manipulation, they turned into Glofish.


These genetic engineered fish were originally used for water test due to their ability to "glow" under certain water conditions. Glofish were introduced to the United States in 2003. Now you can see them in Walmart for $5.99~6.99 a piece.

Glofish will school and breed with regular Zebra Danio. (If they get released into their natural habitat, they could change the entire species). They also act exactly the same as their original. The only noticeable difference is the appearance.

I know people have been selective breed for centuries. Creating specific traits or mutation among many animals. It is still different from inserting an entirely different species' DNA to genetically engineer it.

What is your opinion on this?