It is common knowledge gathered from reading many many articles and posts. I don't know how it's possible to validate. Perhaps only an experienced breeder of oscars can do that. To my knowldege the common "albino" oscars don't get the dark edges. My red tiger (the dark variety, not albino or lutino) actually has light edges on her fins... As I understand it, the so called "albino" is line bred to retain it's coloration. The lutino is similar but has blood of the darker oscars in them, how dark they get depends on the extent of those genes. Often when lutino oscars are young they look like albinos and as they grow older those dark colored genes are expressed.