First off,
"Blueberry" oscars are dyed or at least the majority of them you see for sale are.
There was a debate at another forum about a breeder who actually, through selective breeding, developed a true strain of blue oscar.
This was never proven however!!
Second,
the blue oscars that are dyed are of the albino variety and NOT the standard oscar so once the dye faded you would have an albino!!
This being said, a higher percentage of dyed oscars would make it to adulthood as they are a very hardy fish!!
Now, before anyone starts blasting me thinking I am advocating buying dyed, hybrid or genetically altered fish.....DON'T!!!!
Those who know me here know my stand on the above mentioned "FRANKENFISH"!!!
I do, however feel everyone has the right to own whatever fish they please as long as they are fully informed of the fishes origin beforehand.
CM