Not all males are created equal in the animal world. Some bluehead wrasse aren't quite up to snuff, but instead of giving up on the dating game, they use their undersized bodies to sabotage the mating of larger males.
Called sneaky primary males, these small fish have the same coloring and size as females. This allows them to cozy up to the real females and slip them their sperm packets. All while the dominant males haven't a clue.