I don't understand how that can be cruel, it doesn't harm the fish in any way. If you think that that is cruel then you can't buy any kind of mixed dog, as they altered genetics the same way they did to create different types of dogs. However, they used more complicated genetic modifications for the fish.
Zebra danios cost a buck, and glo fish cost 6 times that, which is 6 dollars. So angel fish and convicts will be jacked waaaay up I bet.
Not really. With dogs they bred them for specific characteristics like long legs or short hair, same with other colors of angels and cons. With these fish they injected a new gene into the eggs to make the fish glow. I think that is the part that I have an issue with. If they could just breed glowing fish without having to inject the initial stock I wouldn't have this much of a problem with it, but thats just one mans opinion.
Also, GuppyMan,
Yes the offspring would glow but it is against the law to breed and distriute "GloFish". Also, since I am on the subject if you were to breed different colors of "GloFish" (ie: Green, Red, Yellow) some would be the same as the mother, some the same as the father and some would be a mix of both colors. This is also the same if you were to breed "GloFish" with any of the Zebra Danio varieties.