Pretty boys get the girl first and still finish last
(NEWSER) - Pretty, colorful guppy guys may get all the ladies, but ugly guppies have “better sperm,” researchers concluded in a recent study. The group watched tropical guppies, and concluded that the colorful men had to “invest” in their beauty at the expense of slowing down their sperm. That's significant, because scientists believe guppy females mate with multiple males, and are ultimately impregnated by the fastest-swimming sperm. More»
