Unless you got them from a specialist breeder, they are not of a specific strain. Most guppies you find at your LFS are just the offspring of random breedings. I could tell you what color they are as those are standard but I can't see all the guppies clearly. For a start, there are 3 guppies in the top photo - which ones is it you want to know about exactly? The one on the bottom right of the top picture is a guppy/endler hybrid that's been bred back several generations to guppies so, though it's closest to being a pure guppy, it has the wild endler colors. The one above it (and I think that's the one in the picture below?) is also an endler cross as you can tell from that bold red marking on its side. The one on the right in the top pcture is an ordinary guppy - looks like it might be a half-black blue though I can't tell from that angle and the pics not clear enough to tell whether it has any other markings.