It's funny how many people say "it's no different than line breeding" - umm, duh, yes it is. I find albino fish so ugly but I think "at least it happens in nature" - this would never in a million years happen. Scientists toiled for years to make these aquatic "cash cows" - for no other reason than to make money satisfying the poor taste of, for the most part, newbies. And I'm sure it doesn't further genetic medicine one iota to make fluorescent fish...contrary to what that clueless person kept saying. Perhaps it helps further an understanding of how genes work, but that's it.
It's just wrong, IMO. Why don't people make toy dogs that glow in the dark? People would be in an uproar, that's why. But angelfish and convicts in neon green and orange are perfectly ok. Even though they're more toy than fish. Look at the way so many people keep flowerhorns and blood parrots...often times poorly, as status symbols more than pets. (Apologies to the MFK people, many of whom I know do a great job keeping these species.)
People have a fit about GM foods. But how tempting is it to produce higher yielding crops that are resistant to pests? It seems like a win win until you think about it and realize...oh, maybe not such a good idea to limit biodiversity even further and cause unintended harm to other organisms. (Perhaps even us, we don't know yet.)
Genetically modified fish...as wrong as cloning, IMO.