Of the first post, the last is an albino black skirt tetra, possible with the long finage.
The 2nd post, the ones that are white with a black streak are Tetra. Possible an emperor Tetra.
Thanks. After looking up pictures of the ones you mentions, the last is either the albino black skirt tetra or the blushing version, and the other is a male Emperor Tetra. Thank you. The other one someone mentioned to me that it was an Oscar, but I haven't been able to find any pictures of an Oscar that looks even remotely like this guy.