The newport aquarium fish are all natural, I believe. They are a type of cave fish that can naturally flash light. These are genetically altered danios. You can get them at Walmart.
these fish are not natural, they are not a cave fish, they are zebra danios that have had a gene from a jellyfish(green colours) or corral(red colours)
in terms of human selection and dogs etc...
dog breeds have evolved over hundreds of years through human selection, this happened by people selecting dogs with certain traits, and breeding them together by providing the right environment, food etc, the genetic footprint of the offspring of said cross will contain half the genes from the mother, and half from the father, so, logically all of these genes existed naturally together to begin with... then sometimes a gene mutates naturally, and we get another trait (spots on a dalmatian for example), in the wild, sometimes this new set of genes proves to be an advantage, and the animal/plant thrives and reproduces...this is what we call natural selection... in human selection, the only difference is that it is humans, not the environment that defines weather or not the mutated gene is a 'success' -which sometimes turns out to be very wrong in the cases of sterility in mules(genes are too different), hip displasia in German shepherds,deafness in dalmatians and respiratory problems in pugs etc etc.....
now take the glofish, they have the regular genes of a zebra danio, plus one more...from either a jellyfish or a corral (depending on colour)
now call me crazy, but no amount of 'human selection' as i just described, could make a tropical fish breed with a saltwater jellyfish or corral.... unnatural!
and the fact that their excuse to develop this fish was to 'help the environment' -which by the way they have not figured out how to do yet-is a bit tough to swallow
we dont send canarys into mines anymore for obvious animal rights reasons, why they would then create a fish simply for this purpose is beyond me.
there are countless chemical tests for pollutants, why do we need a live one?
and i totally agree l.MetalHead.l ... goldfish are a terrible problem, and people are idiots... everytime i fish, and catch carp i kill them, NEVER EVER put them back!!!
that goes the same for all aquarium fish NEVER EVER release aquarium fish into the wild regardless of type, even if they are a native-type fish, you may be carrying a non-visible disease back to your local waterway, or releasing the fish in the wrong area....