Maybe some good news after all, from Planet Catfish:
"The image in the last picture is what is called Corydoras aeneus "Gold shoulder" there are many populations of these collected in Western Brazi, Peru, Colombia and Venezuela. Your Albino is almost certainly Corydoras aeneus. So, you are not technically producing a hybrid just colour forms of Corydoras aeneus, until such a time when the whole "Aeneus group gets sorted out. Then many of the colour forms may be given new species names. Albinos turn up in all species and are not considered as anything more than colour forms.
I would still like to see what they look like after a week over a lighter substrate.
The Corydoras aeneus type schultzii "Black" are line bred colour forms that all emanated from Germany about 8 or 10 years ago and were then commercially produced for the hobby in the Czech republic, they remain black whatever colour the substrate. The image below is of a natural Corydoras aeneus type "schultzii" "
I will set two or three on a separate tank with some clear sandy bottom and see what comes out of it.
Would be really cool if they are not a hybrid but just a new colour variation of the C. Aeneus.