To help you look for them on google, or anywhere else; what you have are Corydoras paleatus, which happen to be albino and longfin. They are usually referred to as longfin not veiltail as most other long finned fish are.
For any information just look up Corydoras paleatus. The fish being albino or longfinned does not matter in their keep. Both albino and longfinned are tank bred traits so you will not see any information about their wild habitat as there isn't one. Being tank bred for so many generations usually indicates they can and will adapt to virtually any tank parameters, not the ones listed which are aimed towards wild caught.
Chris