How it is called this variation?

[Jalexanderfranco]

Hello group, I have a question. Why one of the offspring of my couple of pearlscale is white and has no orange coloring of his brothers? How it is called this variation?
(Translation Google translate)

https://fbcdn-sphotos-f-a.akamaihd.net/hphotos-ak-xpf1/v/t1.0-9/11026321_10206624450026497_912065017017678511_n.jp g?oh=e71c3c599e07f015bb23541318cceb35&oe=5652B380&__gda__=1446393023_d97633c971f72518fe89bd98bfee25d 5

[catsma_97504]

That appears to be a Platinum angel. Please post photos of the parents and the siblings to help us determine what is happening.