The names red tiger, copper, lutino, etc etc are basically man induced different color lines of the same oscars, names made up to call the set color line, in the same manner as there are lines of blue guppies, red guppies, fan tails etc, they are all really just guppies (but selected over generations for color), just like different goldfish strains.
Different color lines, are not really different species of oscars.
Most oscars in the hobby are Astronotus ocellatus.
In any species of fish spawn, there are percentages that deviate from the normal line, and can look a little different, maybe sport a few extra scales of a red, or copper, those color deviations were bred together with others that sport that deviation of color, to get ie red oscars, or others .
