I received a multitude of young/baby zebra danios in August from my LFS before it closed, and recently gave some away when they got too big (didn't want to be overstocked). A few were very young fry and were eaten, however one of them actually survived and has doubled in size. Now that I can see it more clearly, I don't think it's actually a danio like the others (it doesn't have the same shaped tailfin). Any ideas? I think it might be a guppy.