A new hybrid fish created through surprise fertilization in a fish nursery was bred from two species that are more distant from one another than humans and mice on the evolutionary tree. A recent study, described in the journal Genes, describes how sperm from an American paddlefish was able to fertilize the eggs of a Russian sturgeon, giving rise to an unheard-of hybrid … [Read more...] about Scientists Are Astounded By A Hybrid Fish’s Birth Of Two Species That Last Coexisted As An Ancestor In The Jurassic